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

We report demonstrations of both quadrature-squeezed vacuum and photon number difference squeezing generated in an integrated nanophotonic device. Squeezed light is generated via strongly driven spontaneous four-wave mixing below threshold in silicon nitride microring resonators. The generated light is characterized with both homodyne detection and direct measurements of photon statistics using photon number–resolving transition-edge sensors. We measure 1.0(1) decibels of broadband quadrature squeezing (~4 decibels inferred on-chip) and 1.5(3) decibels of photon number difference squeezing (~7 decibels inferred on-chip). Nearly single temporal mode operation is achieved, with measured raw unheralded second-order correlations g(2) as high as 1.95(1). Multiphoton events of over 10 photons are directly detected with rates exceeding any previous quantum optical demonstration using integrated nanophotonics. These results will have an enabling impact on scaling continuous variable quantum technology.

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High-Efficiency Photon-Number-Resolving Detectors based on Hafnium Transition-Edge Sensors

10.1063/1.3292350 ◽

2009 ◽

Cited By ~ 9

Author(s):

A. E. Lita ◽

B. Calkins ◽

L. A. Pellochoud ◽

A. J. Miller ◽

S. Nam ◽

...

Keyword(s):

High Efficiency ◽

Photon Number ◽

Transition Edge Sensors ◽

Transition Edge

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Photon-number discriminating superconducting transition-edge sensors

Metrologia ◽

10.1088/0026-1394/46/4/s28 ◽

2009 ◽

Vol 46 (4) ◽

pp. S283-S287 ◽

Cited By ~ 17

Author(s):

Mauro Rajteri ◽

Emanuele Taralli ◽

Chiara Portesi ◽

Eugenio Monticone ◽

Jörn Beyer

Keyword(s):

Photon Number ◽

Transition Edge Sensors ◽

Superconducting Transition ◽

Transition Edge

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Superconducting transition-edge sensors optimized for high-efficiency photon-number resolving detectors

10.1117/12.852221 ◽

2010 ◽

Cited By ~ 26

Author(s):

A. E. Lita ◽

B. Calkins ◽

L. A. Pellouchoud ◽

A. J. Miller ◽

S. Nam

Keyword(s):

High Efficiency ◽

Photon Number ◽

Transition Edge Sensors ◽

Superconducting Transition ◽

Transition Edge

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

Nanophotonics ◽

10.1515/nanoph-2020-0593 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Jolly Xavier ◽

Deshui Yu ◽

Callum Jones ◽

Ekaterina Zossimova ◽

Frank Vollmer

Keyword(s):

Single Molecule ◽

Optical Measurement ◽

Measurement Techniques ◽

Photon Number ◽

Building Blocks ◽

Optical Probe ◽

Light Sources ◽

Recent Developments ◽

On Chip ◽

Quantum Optical

Abstract 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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