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1.发明公开公开(公告)号：US20240346357A1
公开(公告)日：2024-10-17
申请号：US18517668
申请日：2023-11-22
摘要： A method includes receiving initial quantum states of light or a representation thereof at an optical circuit, from a set of sources. The initial quantum states of light include squeezed states of light, approximate squeezed cat states of light, and/or approximate states of light having at least 3 associated peaks. The optical circuit includes at least one programmable beamsplitter and at least one homodyne detector. The method also includes receiving, at the optical circuit, a signal to cause programming of the at least one programmable beamsplitter and the at least one homodyne detector. The programming is based on at the initial quantum states of light, a measurement of the at least one homodyne detector, and/or a user input. The method also includes generating a plurality of Gottesman-Kitaev-Preskill (GKP) quantum states of light by propagating the initial quantum states of light through the programmed beamsplitter(s) and using the programmed homodyne detector(s).
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公开(公告)号：US20240184044A1
公开(公告)日：2024-06-06
申请号：US18518746
申请日：2023-11-24
发明人： Inna KRASNOKUTSKA , Blair MORRISON
IPC分类号： G02B6/122
CPC分类号： G02B6/1228
摘要： There is described an optical coupler having a plurality of waveguides arranged in a plurality of cladding layers, each cladding layer having at least one waveguide. One or more of the vertical distances between waveguides in adjacent cladding layers and transverse distances between waveguides in the same cladding layer may be configured to perform one or more of mode matching with an external light source, maintaining optical coupling between the plurality of waveguides, and ensuring optical efficiency of the optical coupler.
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公开(公告)号：US20230387647A1
公开(公告)日：2023-11-30
申请号：US17827929
申请日：2022-05-30
发明人： Yanbing Zhang , Varun Vaidya
CPC分类号： H01S3/1024 , H01S3/10015 , H01S3/0085
摘要： A pump source configured to generate a pulsed optical beam. The pump source generates a first light beam, a second light beam, and a third light beam, where the first, the second, and the third light beams satisfy a phase relationship. Each of the first, the second, and the third light beams are independently modulated in separate modulation paths and recombined as a pulsed optical beam. A portion of the pulsed optical beam is parametrically amplified within a nonlinear optical medium, where a resulting amplification gain is proportional to a phase difference between the first, second, and third modulated light beams. The power value of the amplified beam is measured as an indication of the phrase difference between the three beams and a corrective phase adjustment based on the error correction signal is applied on any one of the first, second, and third modulation paths to maintain the phase relationship.
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公开(公告)号：US10809592B2
公开(公告)日：2020-10-20
申请号：US16104424
申请日：2018-08-17
发明人： Avik Dutt , Zachary Vernon , Christian Weedbrook
摘要： An apparatus for producing squeezed light includes a substrate and a first beam splitter integrated onto the substrate. The apparatus also includes a Mach-Zehnder interferometer integrated onto the substrate. The Mach-Zehnder interferometer has a first input coupled to a first output of the first beam splitter and a first output coupled to a second output of the first beam splitter. The apparatus also includes a waveguide integrated onto the substrate and connecting a second input of the Mach-Zehnder interferometer to a second output of the Mach-Zehnder interferometer. The waveguide and the Mach-Zehnder interferometer form a ring resonator. The ring resonator can also be replaced by a waveguide section, including, for example, a spiral waveguide.
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公开(公告)号：US20190339587A1
公开(公告)日：2019-11-07
申请号：US16400343
申请日：2019-05-01
发明人： Zachary VERNON , Kang TAN , Blair MORRISON , Reihaneh SHAHROKHSHAHI , Dylan MAHLER , Matteo MENOTTI , Nicolas QUESADA
摘要： An apparatus includes an optical medium characterized by a third-order nonlinear optical susceptibility. The apparatus also includes a pump light source in optical communication with the optical medium and configured to send a pump light beam to the optical medium. The pump light beam includes a pulsed light beam. The apparatus also includes a drive light source in optical communication with the optical medium and configured to send a drive light beam to the optical medium. The drive light beam includes a continuous wave (CW) light beam. The pump light beam and the drive light beam are configured to generate a signal light beam in a squeezed state of light via spontaneous four-wave mixing in the optical medium.
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公开(公告)号：US20240184043A1
公开(公告)日：2024-06-06
申请号：US18518732
申请日：2023-11-24
发明人： Inna KRASNOKUTSKA , Blair MORRISON
IPC分类号： G02B6/122
CPC分类号： G02B6/1228
摘要： There is described an adiabatic edge coupler comprising two coupled waveguides. A first waveguide extends from a tip width to a terminal width. A second waveguide comprises a first tapered portion that extends from a tip width to an intermediate width, and a second tapered portion that extends from the intermediate width to a terminal width. Upon receipt of an input optical signal, a coupled mode is formed between the two coupled waveguides. Over the first tapered portion, the coupled mode is adiabatically transformed onto the first waveguide. The coupled mode then decouples from the second waveguide over the second tapered portion. The adiabatic transformer enables low loss, small footprint, and fabrication-tolerant in-chip propagation of the coupled mode with relatively simplified fabrication processes and small critical dimensions.
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公开(公告)号：US11972323B2
公开(公告)日：2024-04-30
申请号：US18102402
申请日：2023-01-27
发明人： Kamil Bradler , Daiqin Su , Nathan Killoran , Maria Schuld , Zachary Vernon , Lukas Helt , Blair Morrison , Dylan Mahler
IPC分类号： G06N10/00
CPC分类号： G06N10/00
摘要： An apparatus includes a light source to provide a plurality of input optical modes in a squeezed state. The apparatus also includes a network of interconnected reconfigurable beam splitters (RBSs) configured to perform a unitary transformation of the plurality of input optical modes to generate a plurality of output optical modes. An array of photon counting detectors is in optical communication with the network of interconnected RBSs and configured to measure the number of photons in each mode of the plurality of the output optical modes after the unitary transformation. The apparatus also includes a controller operatively coupled to the light source and the network of interconnected RBSs. The controller is configured to control at least one of the squeezing factor of the squeezed state of light, the angle of the unitary transformation, or the phase of the unitary transformation.
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公开(公告)号：US20230281499A1
公开(公告)日：2023-09-07
申请号：US18126807
申请日：2023-03-27
发明人： Joseph Eli BOURASSA , Ilan TZITRIN , Krishnakumar SABAPATHY , Guillaume DAUPHINAIS , Ish DHAND , Saikat GUHA , Nicolas MENICUCCI , Rafael ALEXANDER , Ben BARAGIOLA , Takaya MATSUURA , Blayney WALSHE
摘要： A system for scalable, fault-tolerant photonic quantum computing includes multiple optical circuits, multiple photon number resolving detectors (PNRs), a multiplexer, and an integrated circuit (IC). During operation, the optical circuits generate output states via Gaussian Boson sampling (GBS), and the PNRs generate qubit clusters based on the output states. The multiplexer multiplexes the qubit clusters and replaces empty modes with squeezed vacuum states, to generate multiple hybrid resource states. The IC stitches together the hybrid resource states into a higher-dimensional cluster state that includes states for fault-tolerant quantum computation.
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公开(公告)号：US20230177374A1
公开(公告)日：2023-06-08
申请号：US18102402
申请日：2023-01-27
发明人： Kamil BRADLER , Daiqin SU , Nathan KILLORAN , Maria SCHULD , Zachary VERNON , Lukas HELT , Blair MORRISON , Dylan MAHLER
IPC分类号： G06N10/00
CPC分类号： G06N10/00
摘要： An apparatus includes a light source to provide a plurality of input optical modes in a squeezed state. The apparatus also includes a network of interconnected reconfigurable beam splitters (RBSs) configured to perform a unitary transformation of the plurality of input optical modes to generate a plurality of output optical modes. An array of photon counting detectors is in optical communication with the network of interconnected RBSs and configured to measure the number of photons in each mode of the plurality of the output optical modes after the unitary transformation. The apparatus also includes a controller operatively coupled to the light source and the network of interconnected RBSs. The controller is configured to control at least one of the squeezing factor of the squeezed state of light, the angle of the unitary transformation, or the phase of the unitary transformation.
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公开(公告)号：US20230153668A1
公开(公告)日：2023-05-18
申请号：US18100290
申请日：2023-01-23
摘要： An apparatus includes a plurality of processing layers coupled in series. Each processing layer in the plurality of processing layers includes a Gaussian unit configured to perform a linear transformation on an input signal including a plurality of optical modes. The Gaussian unit includes a network of interconnected beamsplitters and phase shifters and a plurality of squeezers operatively coupled to the network of interconnected beamsplitters and phase shifters. Each processing layer also includes a plurality of nonlinear gates operatively coupled to the Gaussian unit and configured to perform a nonlinear transformation on the plurality of optical modes. The apparatus also includes a controller operatively coupled to the plurality of processing layers and configured to control a setting of the plurality of processing layers.
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