On-demand semiconductor single-photon source with near-unity indistinguishability.

Single-photon sources based on semiconductor quantum dots offer distinct advantages for quantum information, including a scalable solid-state platform, ultrabrightness and interconnectivity with matter qubits. A key prerequisite for their use in optical quantum computing and solid-state networks is a high level of efficiency and indistinguishability. Pulsed resonance fluorescence has been anticipated as the optimum condition for the deterministic generation of high-quality photons with vanishing effects of dephasing. Here, we generate pulsed single photons on demand from a single, microcavity-embedded quantum dot under s-shell excitation with 3 ps laser pulses. The π pulse-excited resonance-fluorescence photons have less than 0.3% background contribution and a vanishing two-photon emission probability. Non-postselective Hong-Ou-Mandel interference between two successively emitted photons is observed with a visibility of 0.97(2), comparable to trapped atoms and ions. Two single photons are further used to implement a high-fidelity quantum controlled-NOT gate.

[1]  Hong,et al.  Measurement of subpicosecond time intervals between two photons by interference. , 1987, Physical review letters.

[2]  B. Goldberg,et al.  Light-induced spectral diffusion in single self-assembled quantum dots , 2000 .

[3]  P. Petroff,et al.  A quantum dot single-photon turnstile device. , 2000, Science.

[4]  Y. Yamamoto,et al.  Triggered single photons from a quantum dot. , 2001, Physical review letters.

[5]  Axel Kuhn,et al.  Deterministic single-photon source for distributed quantum networking. , 2002, Physical review letters.

[6]  Yoshihisa Yamamoto,et al.  Indistinguishable photons from a single-photon device , 2002, Nature.

[7]  A. Zrenner,et al.  Coherent properties of a two-level system based on a quantum-dot photodiode , 2002, Nature.

[8]  T. Ralph,et al.  Demonstration of an all-optical quantum controlled-NOT gate , 2003, Nature.

[9]  A. D. Boozer,et al.  Deterministic Generation of Single Photons from One Atom Trapped in a Cavity , 2004, Science.

[10]  Y Yamamoto,et al.  Quantum teleportation with a quantum dot single photon source. , 2004, Physical review letters.

[11]  Charles Santori,et al.  Single-photon generation with InAs quantum dots , 2004 .

[12]  Keiji Sasaki,et al.  Demonstration of an optical quantum controlled-NOT gate without path interference. , 2005, Physical review letters.

[13]  Wang Yao,et al.  Theory of control of the spin-photon interface for quantum networks. , 2005, Physical review letters.

[14]  Decoherence processes during optical manipulation of excitonic qubits in semiconductor quantum dots , 2004, cond-mat/0404465.

[15]  Holger F Hofmann.  Complementary classical fidelities as an efficient criterion for the evaluation of experimentally realized quantum operations. , 2005, Physical review letters.

[16]  H. Weinfurter,et al.  Linear optics controlled-phase gate made simple. , 2005, Physical Review Letters.

[17]  B. Baseia,et al.  Teleporting a state inside a single bimodal high-Q cavity , 2005 .

[18]  D. Ritchie,et al.  Influence of exciton dynamics on the interference of two photons from a microcavity single-photon source. , 2005, Optics express.

[19]  Pieter Kok,et al.  Efficient high-fidelity quantum computation using matter qubits and linear optics , 2005 .

[20]  C Bräuchle,et al.  Indistinguishable photons from a single molecule. , 2005, Physical review letters.

[21]  K J Resch,et al.  Demonstration of a simple entangling optical gate and its use in bell-state analysis. , 2005, Physical review letters.

[22]  S. Ramelow,et al.  Deutsch-Jozsa algorithm using triggered single photons from a single quantum dot , 2006, 2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.

[23]  P. Grangier,et al.  Quantum interference between two single photons emitted by independently trapped atoms , 2006, Nature.

[24]  I. Favero,et al.  Unconventional motional narrowing in the optical spectrum of a semiconductor quantum dot , 2006, cond-mat/0610346.

[25]  D. Deppe,et al.  Resonance fluorescence from a coherently driven semiconductor quantum dot in a cavity. , 2007, Physical review letters.

[26]  A. Shields.  Semiconductor quantum light sources , 2007, 0704.0403.

[27]  C. Monroe,et al.  Quantum interference of photon pairs from two remote trapped atomic ions , 2006, quant-ph/0608047.

[28]  G. Milburn,et al.  Linear optical quantum computing with photonic qubits , 2005, quant-ph/0512071.

[29]  R. A. Smith,et al.  Single Photon Sources , 2008 .

[30]  A J Shields,et al.  Postselective two-photon interference from a continuous nonclassical stream of photons emitted by a quantum dot. , 2008, Physical review letters.

[31]  Driving-dependent damping of Rabi oscillations in two-level semiconductor systems. , 2008, Physical review letters.

[32]  H. J. Kimble,et al.  The quantum internet , 2008, Nature.

[33]  Dirk Englund,et al.  Controlled Phase Shifts with a Single Quantum Dot , 2008, Science.

[34]  D. Roditchev,et al.  Resonant excitonic emission of a single quantum dot in the Rabi regime , 2007, 0707.3061.

[35]  Min Xiao,et al.  Resonantly driven coherent oscillations in a solid-state quantum emitter , 2009 .

[36]  Terry Rudolph,et al.  Proposal for pulsed on-demand sources of photonic cluster state strings. , 2009, Physical review letters.

[37]  A. N. Vamivakas,et al.  Spin-resolved quantum-dot resonance fluorescence , 2008, 0806.3707.

[38]  A Forchel,et al.  Post-selected indistinguishable photons from the resonance fluorescence of a single quantum dot in a microcavity. , 2009, Physical review letters.

[39]  D. Englund,et al.  Resonant excitation of a quantum dot strongly coupled to a photonic crystal nanocavity. , 2010, Physical review letters.

[40]  T. M. Godden,et al.  Phonon-induced Rabi-frequency renormalization of optically driven single InGaAs/GaAs quantum dots. , 2010, Physical review letters.

[41]  Isabelle Sagnes,et al.  Ultrabright source of entangled photon pairs , 2010, Nature.

[42]  A. Imamoğlu,et al.  Quantum-dot-spin single-photon interface. , 2010, Physical review letters.

[43]  Ian Farrer,et al.  Two-photon interference of the emission from electrically tunable remote quantum dots , 2010 .

[44]  G. Solomon,et al.  Interference of single photons from two separate semiconductor quantum dots. , 2010, Physical review letters.

[45]  S. Reitzenstein,et al.  Highly indistinguishable photons from a quantum dot in a microcavity , 2011 .

[46]  Christian Schneider,et al.  Quantum dot induced phase shift in a pillar microcavity , 2011 .

[47]  C. Voisin,et al.  Ultra-coherent single photon source , 2011, 1111.1621.

[48]  Clemens Matthiesen,et al.  Subnatural linewidth single photons from a quantum dot. , 2012, Physical review letters.

[49]  A Ludwig,et al.  Probing single-charge fluctuations at a GaAs/AlAs interface using laser spectroscopy on a nearby InGaAs quantum dot. , 2012, Physical review letters.

[50]  P. Michler,et al.  Cascaded single-photon emission from the Mollow triplet sidebands of a quantum dot , 2011, Nature Photonics.

[51]  H. Weinfurter,et al.  Multiphoton entanglement and interferometry , 2003, 0805.2853.

[52]  Resonance fluorescence from semiconductor quantum dots: beyond the Mollow triplet. , 2012, Physical review letters.

[53]  S. Bank,et al.  Structural and optical studies of nitrogen incorporation into GaSb-based GaInSb quantum wells , 2012 .

[54]  D. Ritchie,et al.  Controlled-NOT gate operating with single photons , 2012, 1205.4899.

[55]  J. Rarity,et al.  Photonic quantum technologies , 2009, 1003.3928.