The present disclosure provides electrode portions for generating electric and/or magnetic fields for trapping ions in a trapping zone, a three-dimensional (3D) ion trap including one or more of such electrode portions, systems for trapping ions with such a 3D ion trap, as well as methods for manufacturing such electrode portions. An electrode portions includes an electrode body made of an electrically insulating substrate and elongated in a first direction towards the ion trapping zone, a peak electrode located on an extremity of the electrode body closest to the trapping zone or a side electrode located laterally relative to the extremity, and a connection connected to the peak electrode and leading from the peak electrode through said electrode body away from the trapping zone.
Some embodiments in the present disclosure relate to an apparatus and methods for guiding spontaneous emissions of a quantum emitter in a first spatial direction. A reflector reflects an emission of the quantum emitter in a second spatial direction according to a boundary condition, wherein the boundary condition includes obtaining destructive interference of the reflected emission with the emission of the quantum emitter, and the reflector includes a portion adapted to guide an emission of the quantum emitter in the first spatial direction.
H01L 33/06 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof characterised by the semiconductor bodies with a quantum effect structure or superlattice, e.g. tunnel junction within the light emitting region, e.g. quantum confinement structure or tunnel barrier
B82Y 20/00 - Nanooptics, e.g. quantum optics or photonic crystals
G21K 1/00 - Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
G21K 1/06 - Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diffraction, refraction, or reflection, e.g. monochromators
Some embodiments in the present disclosure relate to an apparatus and methods for suppressing spontaneous emissions of two or more quantum emitters. The two or more quantum emitters are located in a plane. A reflector is located along an axis perpendicular to the plane. The reflector reflects an emission of a quantum emitter out of the two or more quantum emitters according to a boundary condition, wherein the boundary condition includes obtaining destructive interference of the reflected emissions with the emissions of the two or more quantum emitters.
The present disclosure provides calibration methods for calibration of the amplitude of a simultaneous sound wave of a first frequency ƒ1generated in an acousto-optical element (AOE) with another simultaneous sound wave of a second frequency ƒ2. The present disclosure also provides apparatuses configured to use such calibration methods to calibrate laser light, computer programs comprising instructions that cause a computer to perform such calibration methods, and computer-readable storage mediums comprising such computer programs. In particular, a calibration method comprises obtaining a first calibrated amplitude value (I) of a of a first non-simultaneous sound wave of the first frequency ƒ1and a second calibrated amplitude value (II) of a second non-simultaneous sound wave of the second frequency ƒ2. A value (III), for calibrating the amplitude of the simultaneous sound wave of the first frequency ƒ1 is calculated in accordance with a predetermined relation between the first calibrated value (I), the second calibrated value (II), and the value (III).
G02F 1/11 - Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulatingNon-linear optics for the control of the intensity, phase, polarisation or colour based on acousto-optical elements, e.g. using variable diffraction by sound or like mechanical waves
The present disclosure provides embodiments for optical cavity apparatuses and methods for assembling such apparatuses. For instance, an optical cavity apparatus comprises a body and two mirrors that are attached to the body and form an optical cavity having an optical path inside the body. Furthermore, the body has an opening that allows gas to be pumped out of the optical cavity; and comprises a closing means attached to the opening that can be closed for maintaining, after pumping the gas out of the optical path, a negative pressure in the optical cavity.
The present disclosure provides embodiments for entangling two or more trapped ions. For this, a common motional mode of the two or more trapped ions is used by conditionally, depending on an internal state of said two or more trapped ions, exciting and/or de-exciting said common motional mode. The common motional mode is conditionally excited/de-excited by inducing, on each of the two or more trapped ions respective perpendicular state-dependent forces (SDFs) that are modulated in accordance with the frequency of the motional mode. More specifically, each of the perpendicular SDFs is induced by a laser beam and acts perpendicular to the propagation direction of the laser beam that induces it. The SDFs may be modulated by (i) modulating an intensity and/or an amplitude of the electromagnetic field of the first laser beam, (ii) changing a position and/or a direction of the first laser beam relative to the first trapped ion, and/or (iii) including light of different frequencies into the laser beam.
Some embodiments in the present disclosure relate to an apparatus and methods to excite a trapped ion. A first laser beam and a second laser beam pass through at least one common lens of an objective. The two laser beams are focused by said objective at the position of the trapped ion. A moving standing wave is generated at the position of the trapped ion, which induces a force on the trapped ion. Two ions may be entangled by generating such moving standing wave at the respective positions of both of said ions.
The present disclosure provides embodiments for stabilizing simultaneously N lasers using an optical resonator. A distance between two mirrors forming the optical resonator is adjusted to a stabilization length. More specifically, at the stabilization length, there is, for each of N respective mutually different predetermined frequencies, a resonant frequency of the optical resonator for which the difference between the predetermined frequency and the said resonant frequency is smaller than a predetermined target value. Light from each of the N lasers is fed to the optical resonator and, thereby, N respective error signals are generated. Based on the N error signals, the N lasers are stabilized simultaneously.
H01S 3/139 - Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the mutual position or the reflecting properties of the reflectors of the cavity
H01S 3/13 - Stabilisation of laser output parameters, e.g. frequency or amplitude
H01S 3/137 - Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling devices placed within the cavity for stabilising of frequency
9.
Method and System for Reducing the Amplitude of an Oscillating Electric Field at the Equilibrium Position of a Trapped Ion
Provided is a method of reducing the magnitude of a quasi-static electric dipole field at the null position of an oscillating electric quadrupole field of an ion trap. The method includes trapping at least one ion in a trapping electric field. The trapping electric field includes an electric field amplitude; using an interferometry sequence including applying a first laser pulse when the trapping electric field amplitude includes a first trapping electric field amplitude; applying a second laser pulse when the trapping electric field amplitude includes a second trapping electric field amplitude different from the first electric field amplitude; and measuring a state of the ion; repeating the interferometry sequence in order to obtain a plurality of measurements of the state of the ion; determining a probability that the trapped ion changes state; and adjusting the trapping electric field based on the determined probability.
A method of measuring a physical quantity implemented in a hybrid classical-quantum system, the method comprising initializing the plurality of controllable quantum systems in an initial state, applying a set of preparation gates to the plurality of controllable quantum systems for preparing the plurality of controllable quantum systems in a non-classical state, evolving the non-classical state over a time period for obtaining an evolved state of the plurality of controllable quantum systems, applying a set of decoding gates to the plurality of controllable quantum systems in the evolved state, performing a measurement of the plurality of controllable quantum systems, and determining a derived value of the physical quantity based on a mapping function between an outcome of the measurement and the physical quantity on the classical computation system.
A method includes providing a first quantum state at a first node, transforming the first quantum state to obtain a first plurality of transformed quantum states, and measuring the first plurality of transformed quantum states to obtain a first set of measurement results. The method further includes providing a second quantum state at a second node, transforming the second quantum state to obtain a second plurality of transformed quantum states, the second plurality of unitary operations corresponding to the first plurality of unitary operations, and measuring the second plurality of transformed quantum states to obtain a second set of measurement results. A similarity measure between the first quantum state and the second quantum state is determined in terms of the first set of measurement results and the second set of measurement results, the similarity measure including a trace product of the first quantum state and the second quantum state.
A method of measuring a physical quantity implemented in a hybrid classical-quantum system, the method comprising initializing the plurality of controllable quantum systems in an initial state, applying a set of preparation gates to the plurality of controllable quantum systems for preparing the plurality of controllable quantum systems in a non-classical state, evolving the non-classical state over a time period for obtaining an evolved state of the plurality of controllable quantum systems, applying a set of decoding gates to the plurality of controllable quantum systems in the evolved state, performing a measurement of the plurality of controllable quantum systems, and determining a derived value of the physical quantity based on a mapping function between an outcome of the measurement and the physical quantity on the classical computation system.
The present disclosure provides embodiments for stabilizing simultaneously N lasers using an optical resonator. A distance between two mirrors forming the optical resonator is adjusted to a stabilization length. More specifically, at the stabilization length, there is, for each of N respective mutually different predetermined frequencies, a resonant frequency of the optical resonator for which the difference between the predetermined frequency and the said resonant frequency is smaller than a predetermined target value. Light from each of the N lasers is fed to the optical resonator and, thereby, N respective error signals are generated. Based on the N error signals, the N lasers are stabilized simultaneously.
A method for comparing two quantum states comprises providing a first quantum state at a first node, transforming the first quantum state with a first plurality of unitary operations to obtain a first plurality of transformed quantum states, and measuring the first plurality of transformed quantum states with a first set of quantum measurements to obtain a first set of measurement results. The method further comprises providing a second quantum state at a second node, transforming the second quantum state with a second plurality of unitary operations to obtain a second plurality of transformed quantum states, wherein the second plurality of unitary operations corresponds to the first plurality of unitary operations, and measuring the second plurality of transformed quantum states with a second set of quantum measurements to obtain a second set of measurement results. The method further comprises determining a similarity measure between the first quantum state and the second quantum state in terms of the first set of measurement results and the second set of measurement results, wherein the similarity measure comprises a trace product of the first quantum state and the second quantum state.
An ion trap device is disclosed with a method of manufacturing thereof including a substrate, first and second RF electrode rails, first and second DC electrodes on either upper or lower side of substrate, and a laser penetration passage connected to ion trapping zone from outer side of the first or second side of substrate. The substrate includes ion trapping zone in space defined by first and second sides of substrate separated by a distance with reference to width direction of ion trap device. The first and second RF electrode rails are arranged in parallel longitudinally of ion trap device. The first RF electrode is arranged on upper side of first side, the second DC electrode is arranged on lower side of first side, the first DC electrode is arranged on upper side of second side, and the second RF electrode rail is arranged on lower side of second side.
09 - Scientific and electric apparatus and instruments
14 - Precious metals and their alloys; jewelry; time-keeping instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Computers; Recorded computer software for quantum or quantum-inspired applications for data processing; Quantum computers; Quantum memories for computers; Quantum-based memories for computers; Downloadable information system software; Recorded information system software; Quantum sensors; Quantum detectors; Discrete variable and continuous variable quantum cryptography systems, namely, hardware for quantum-based encryption and decryption; Computer hardware and recorded and downloadable software for the control, operation, execution and interpretation of quantum, hybrid-quantum and quantum-inspired devices and applications; Recorded and downloadable computer programs for quantum computers and quantum devices in the context of sensors and clocks, communication, simulations as well as computing; computer hardware for use in quantum key exchange; computer hardware for use in quantum entanglement; Recorded and downloadable software for use in cryptography; Recorded and downloadable Computer software for encryption; Recorded and downloadable computer software for decryption; Communication equipment based on quantum technology, in the nature of, routers, bridges, amplifiers, regenerators and repeaters; Recorded and downloadable firmware; Peripherals, namely, quantum processors, quantum co-processors, quantum sensors, quantum clocks, quantum simulators, quantum communication devices, control apparatus for the previous mentioned devices, and interfaces between these devices and the classical computer, adapted for use with computers that enable the usage of quantum or quantum-inspired capabilities; Computer microprocessors; Computer mainframes; Computer memory devices; Quantum-computer based hardware designed to enhance the utility of semiconductor devices; measuring devices, namely, devices based on quantum metrology; Ion traps; Ion trap experiment kits; Electronic databases in the field of quantum devices and applications, namely, for sensors, clocks, communication, simulations and computing; Data storage devices in the nature of classical and quantum devices and applications; Data processing apparatus; Recorded content in the nature of input/output data and algorithms stored on classical, quantum, hybrid-quantum and quantum-inspired storage devices and applications; Data storage media in the field of classical, quantum, hybrid-quantum and quantum-inspired data storage devices and applications; Downloadable electronic publications in the nature of newsletters, articles, journals, book-chapters, books in the field of quantum, hybrid-quantum and quantum-inspired devices and applications, research and development, marketing and sales, public outreach, and training Horological and chronometric instruments; Atomic clocks Scientific and technological services, namely, research, analysis, design, and testing in the field of quantum technology; Design and development, in particular in connection with quantum information systems, quantum computers, quantum detectors, hardware and software components therefor, ion traps or atomic clocks; Development of computer hardware and computer software, namely, quantum computer hardware and quantum software; Quantum computer software design for others; Quantum computer design for others; Computer consulting services in the field of design, selection, implementation and use of quantum computer hardware and software systems for others; Scientific consultancy on the topic of quantum networking, quantum cryptography, quantum teleportation, quantum scanning and quantum measurement; Updating of computer software
09 - Scientific and electric apparatus and instruments
14 - Precious metals and their alloys; jewelry; time-keeping instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Computers; Software; Quantum computers; Quantum memories (computers); Quantum computers; Quantum-based memories (computers); Quantum broadcasting systems; Quantum sensors; Quantum detectors; Discrete variable and continuous variable quantum cryptography systems; Computer hardware and software; Computer programs; computer hardware for use in quantum key distribution; computer hardware for use in quantum entanglement; software for use in cryptography; Computer software for encryption; Computer software for decryption; Communication products based on quantum technology, including routers, bridges, amplifiers, regenerators and repeaters; Firmware; Peripherals adapted for use with computers; Computer microprocessors; Computer mainframes; Computer memory devices; Quantum-computer based hardware designed to enhance the utility of semiconductor devices; Measurement devices based on quantum metrology; Ion traps; Ion trap experiment kits; Databases (electronic); Data storage devices; Data processing apparatus; Recorded content; Data storage media; Electronic publications, downloadable. Horological and chronometric instruments; Atomic clocks. Scientific and technological services and research and design relating thereto, in particular in the field of quantum technology, and technologies supporting the latter; Design and development, in particular in connection with quantum information systems, quantum computers, quantum detectors, hardware and software components therefor, ion traps or atomic clocks; Development of computer hardware and computer software including, quantum computer hardware and quantum software; Quantum computer software design for others; Quantum computer design for others; Computer consulting services in the field of quantum computing including hardware and software; Consultancy in relation to quantum networking, quantum cryptography, quantum teleportation, quantum sensing and quantum measurement; Updating of computer software.
18.
MEMS-based 3D ion trapping device for using laser penetrating ion trapping structure, and method for manufacturing same
An ion trap device is disclosed with a method of manufacturing thereof including a substrate, first and second RF electrode rails, first and second DC electrodes on either upper or lower side of substrate, and a laser penetration passage connected to ion trapping zone from outer side of the first or second side of substrate. The substrate includes ion trapping zone in space defined by first and second sides of substrate separated by a distance with reference to width direction of ion trap device. The first and second RF electrode rails are arranged in parallel longitudinally of ion trap device. The first RF electrode is arranged on upper side of first side, the second DC electrode is arranged on lower side of first side, the first DC electrode is arranged on upper side of second side, and the second RF electrode rail is arranged on lower side of second side.
An ion trap device includes a substrate over which at least one central DC electrode, an RF electrode and at least one side electrode are disposed. The central DC electrode includes a DC connector pad and a DC rail connected to the DC connector pad. The RF electrode includes at least one RF rail located adjacent to the DC rail and an RF pad connected to the at least one RF rail. The RF electrode is disposed between the central DC electrode and the side electrode. At least one pair of electrodes among the central DC electrode, the RF electrode and the side electrode have round corners facing each other.
H01J 49/06 - Electron- or ion-optical arrangements
H01J 9/14 - Manufacture of electrodes or electrode systems of non-emitting electrodes
H01L 27/18 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including components exhibiting superconductivity
H01J 3/00 - Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
H01J 49/00 - Particle spectrometers or separator tubes
H01J 49/42 - Stability-of-path spectrometers, e.g. monopole, quadrupole, multipole, farvitrons
20.
Apparatus and method for trapping charged particles and performing controlled interactions between them
An apparatus and a method for trapping charged particles and performing controlled interactions between them are provided. The apparatus includes a substrate and RF electrodes and dedicated DC electrodes arranged on the substrate and configured to generate a trapping potential for trapping the charged particles above the substrate. The RF and dedicated DC electrodes include at least one RF trapping electrode configured to be driven with an RF voltage for contributing to the trapping potential, an array of two or more trapping site DC electrodes configured to be biased with a DC voltage for contributing to the trapping potential, and a first individually drivable RF control electrode arranged between a first pair out of the two or more trapping site DC electrodes. The first RF control electrode is configured to be individually driven by an adjustable RF voltage such that the trapping potential above and between the first pair of trapping site DC electrodes forms separate charged particle traps adapted for trapping charged particles therein if the adjustable RF voltage takes a first value, and forms a charged particle interaction trap adapted for performing controlled interactions between charged particles if the adjustable RF voltage takes a second value.
