All-fiber multiplexed source of high-purity single photons

Single-photon sources based on spontaneous photon-pair generation have enabled pioneering experiments in quantum physics. However, next-generation photonic quantum technologies require higher generation probabilities of photons in well-controlled pure states capable of high-visibility interference. We have harnessed bespoke fiber technology to develop virtually alignment-free sources that deliver high-purity heralded single photons in telecoms single-mode fiber. The resulting access to low-loss optical delay enabled us to actively route the heralded output from two almost identical sources to enhance the delivery probability of single photons relative to one individual source. Our results indicate how the scale of photonic quantum technologies might be increased via guided-wave multiplexing of high-purity photons.

[1]  J G Rarity,et al.  Nonclassical 2-photon interference with separate intrinsically narrowband fibre sources. , 2009, Optics express.

[2]  M P Almeida,et al.  Reducing multi-photon rates in pulsed down-conversion by temporal multiplexing. , 2011, Optics express.

[3]  E. Jeffrey,et al.  Towards a periodic deterministic source of arbitrary single-photon states , 2004 .

[4]  Ian A. Walmsley,et al.  Eliminating frequency and space-time correlations in multiphoton states , 2001 .

[5]  A. Gilchrist,et al.  Multiplexed single-photon-state preparation using a fiber-loop architecture , 2015, 1503.03546.

[6]  Philip H. W. Leong,et al.  Active temporal multiplexing of indistinguishable heralded single photons , 2015, Nature Communications.

[7]  Christine Silberhorn,et al.  Heralded generation of ultrafast single photons in pure quantum States. , 2007, Physical review letters.

[8]  J. D. Franson,et al.  Single photons on pseudodemand from stored parametric down-conversion , 2002, quant-ph/0205103.

[9]  David C. Burnham,et al.  Observation of Simultaneity in Parametric Production of Optical Photon Pairs , 1970 .

[10]  Johannes Kofler,et al.  Experimental generation of single photons via active multiplexing , 2010, 1007.4798.

[11]  Andreas Christ,et al.  Highly efficient single-pass source of pulsed single-mode twin beams of light. , 2011, Physical review letters.

[12]  Jian-Wei Pan,et al.  On-Demand Single Photons with High Extraction Efficiency and Near-Unity Indistinguishability from a Resonantly Driven Quantum Dot in a Micropillar. , 2016, Physical review letters.

[13]  T.D. Vo,et al.  Integrated spatial multiplexing of heralded single-photon sources , 2013, Nature communications.

[14]  Brian J. Smith,et al.  Tailored photon-pair generation in optical fibers. , 2008, Physical review letters.

[15]  John E. Sipe,et al.  High‐resolution spectral characterization of two photon states via classical measurements , 2014 .

[16]  Spectrally multiplexed and tunable-wavelength photon pairs at 1.55 μm from a silicon coupled-resonator optical waveguide. , 2013, Optics letters.

[17]  I. Sagnes,et al.  Near-optimal single-photon sources in the solid state , 2015, Nature Photonics.

[18]  Benjamin J. Eggleton,et al.  Hybrid photonic circuit for multiplexed heralded single photons , 2014, 1402.7202.

[19]  Paolo Villoresi,et al.  Asymmetric architecture for heralded single-photon sources , 2012, 1210.6878.

[20]  B J Eggleton,et al.  Enhancing the heralded single-photon rate from a silicon nanowire by time and wavelength division multiplexing pump pulses. , 2015, Optics letters.

[21]  Christine Silberhorn,et al.  High-performance single-photon generation with commercial-grade optical fiber , 2010, 1012.1821.

[22]  Fumihiro Kaneda,et al.  Time-multiplexed heralded single-photon source , 2015, 1507.06052.

[23]  Alan L. Migdall,et al.  Deterministic generation of single photons via multiplexing repetitive parametric downconversions , 2013 .

[24]  Miguel A. Larotonda,et al.  Multiplexing photons with a binary division strategy , 2014 .

[25]  Damien Bonneau,et al.  Effect of loss on multiplexed single-photon sources , 2014, 1409.5341.

[26]  C. M. Natarajan,et al.  On-chip quantum interference between silicon photon-pair sources , 2013, Nature Photonics.

[27]  Jeremy L O'Brien,et al.  Active temporal and spatial multiplexing of photons , 2016 .

[28]  Todd A. Brun,et al.  Quantum Computing , 2011, Computer Science, The Hardware, Software and Heart of It.

[29]  J. Sipe,et al.  Stimulated emission tomography. , 2013 .

[30]  D. Branning,et al.  Tailoring single-photon and multiphoton probabilities of a single-photon on-demand source , 2002, quant-ph/0205140.

[31]  J. Sipe,et al.  Fast and highly resolved capture of the joint spectral density of photon pairs , 2014 .

[32]  Offir Cohen,et al.  Photon pair-state preparation with tailored spectral properties by spontaneous four-wave mixing in photonic-crystal fiber. , 2007, Optics express.

[33]  Jun Chen,et al.  All-fiber photon-pair source for quantum communications: Improved generation of correlated photons. , 2004 .

[34]  C. Silberhorn,et al.  Limits on the deterministic creation of pure single-photon states using parametric down-conversion , 2011, 1111.4095.