Broadband quadrature-squeezed vacuum and nonclassical photon number correlations from a nanophotonic device

Vaidya, Varun; Morrison, Blair; Helt, L. G.; Shahrokshahi, R.; Mahler, Dylan H.; Collins, Matthew J.; Tan, Kuan Yen; Lavoie, Jonathan; Repingon, A.; Menotti, M.; Quesada, Nicolás; Pooser, Raphael C.; Lita, Adriana E.; Gerrits, Thomas; Nam, S. W.; Vernon, Z.

doi:10.1126/sciadv.aba9186

Cited by 129 publications

(61 citation statements)

References 47 publications

(83 reference statements)

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“…The numerous procedures for generating optical GKP states that have been proposed tend either to be non-deterministic, as they rely on post-selected measurements directly [25][26][27][28][29][30] or indirectly [31][32][33]; or require the experimentally challenging conditions of coherent interactions with matter [34,35] or extremely strong optical nonlinearity [35]. Recent advances in photon-number-resolving (PNR) detectors [36][37][38][39] have substantially improved the viability of the post-selection approach in the near term, with methods based on Gaussian boson sampling (GBS) [27][28][29][30] now within reach of state-of-the-art optical devices. Low-probability sources can be improved with the help of multiplexing at the cost of an increased overhead.…”

Section: Overview Of Architecturementioning

confidence: 99%

Blueprint for a Scalable Photonic Fault-Tolerant Quantum Computer

Bourassa

Alexander

Vasmer

et al. 2021

Quantum

234

202

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Photonics is the platform of choice to build a modular, easy-to-network quantum computer operating at room temperature. However, no concrete architecture has been presented so far that exploits both the advantages of qubits encoded into states of light and the modern tools for their generation. Here we propose such a design for a scalable fault-tolerant photonic quantum computer informed by the latest developments in theory and technology. Central to our architecture is the generation and manipulation of three-dimensional resource states comprising both bosonic qubits and squeezed vacuum states. The proposal exploits state-of-the-art procedures for the non-deterministic generation of bosonic qubits combined with the strengths of continuous-variable quantum computation, namely the implementation of Clifford gates using easy-to-generate squeezed states. Moreover, the architecture is based on two-dimensional integrated photonic chips used to produce a qubit cluster state in one temporal and two spatial dimensions. By reducing the experimental challenges as compared to existing architectures and by enabling room-temperature quantum computation, our design opens the door to scalable fabrication and operation, which may allow photonics to leap-frog other platforms on the path to a quantum computer with millions of qubits.

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Section: Overview Of Architecturementioning

confidence: 99%

Blueprint for a Scalable Photonic Fault-Tolerant Quantum Computer

Bourassa

Alexander

Vasmer

et al. 2021

Quantum

234

202

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“…Examples of quadrature-squeezed light generation in integrated photonic devices are included in the studies by Vaidya et al and Zhao et al [215,216], both of which use four-wave mixing processes in silicon nitride micro-resonators. Squeezed light generation in a room temperature optomechanical cavity was also achieved recently.…”

Section: Non-linear Optical Quantum Sources and Resonatorsmentioning

confidence: 99%

Quantum nanophotonic and nanoplasmonic sensing: towards quantum optical bioscience laboratories on chip

Xavier

Jones

et al. 2021

Nanophotonics

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Quantum-enhanced sensing and metrology pave the way for promising routes to fulfil the present day fundamental and technological demands for integrated chips which surpass the classical functional and measurement limits. The most precise measurements of optical properties such as phase or intensity require quantum optical measurement schemes. These non-classical measurements exploit phenomena such as entanglement and squeezing of optical probe states. They are also subject to lower detection limits as compared to classical photodetection schemes. Biosensing with non-classical light sources of entangled photons or squeezed light holds the key for realizing quantum optical bioscience laboratories which could be integrated on chip. Single-molecule sensing with such non-classical sources of light would be a forerunner to attaining the smallest uncertainty and the highest information per photon number. This demands an integrated non-classical sensing approach which would combine the subtle non-deterministic measurement techniques of quantum optics with the device-level integration capabilities attained through nanophotonics as well as nanoplasmonics. In this back drop, we review the underlining principles in quantum sensing, the quantum optical probes and protocols as well as state-of-the-art building blocks in quantum optical sensing. We further explore the recent developments in quantum photonic/plasmonic sensing and imaging together with the potential of combining them with burgeoning field of coupled cavity integrated optoplasmonic biosensing platforms.

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“…We are not aware of any theory tackling this problem in a satisfying way. A deep understanding of the interplay between non-linear optical effects and irreversible thermodynamics is of interest for improving not only the performances of on-chip Raman sensors but also the ones of others on-chip devices such as squeezed states sources [24][25][26] .…”

Section: Irreversible Thermodynamics In Dielectric Continuous Media Subject To An Optical Fieldmentioning

confidence: 99%