Emission-Frequency Separated High Quality Single-Photon Sources Enabled by Phonons.

We demonstrate theoretically that the single-photon purity of photons emitted from a quantum dot exciton prepared by phonon-assisted off-resonant excitation can be significantly higher in a wide range of parameters than that obtained by resonant preparation for otherwise identical conditions. Despite the off-resonant excitation, the brightness stays on a high level. These surprising findings exploit the fact that the phonon-assisted preparation is a two-step process where phonons first lead to a relaxation between laser-dressed states while high exciton occupations are reached only with a delay to the laser pulse maximum by adiabatically undressing the dot states. Due to this delay, possible subsequent processes, in particular multiphoton excitations, appear at a time when the laser pulse is almost gone. The resulting suppression of reexcitation processes increases the single-photon purity. Due to the spectral separation of the signal photons from the laser frequencies this enables the emission of high quality single photons not disturbed by a laser background while taking advantage of the robustness of the phonon assisted scheme.

[1]  V. M. Axt,et al.  Path-integral approach for nonequilibrium multitime correlation functions of open quantum systems coupled to Markovian and non-Markovian environments , 2018, Physical Review B.

[2]  S. Hughes,et al.  Pulsed excitation dynamics in quantum-dot–cavity systems: Limits to optimizing the fidelity of on-demand single-photon sources , 2018, Physical Review B.

[3]  Shuo Sun,et al.  Quantum dot single-photon sources with ultra-low multi-photon probability , 2018, npj Quantum Information.

[4]  V. Zwiller,et al.  On-demand generation of background-free single photons from a solid-state source , 2017, 1712.06937.

[5]  V. M. Axt,et al.  Nonlinear cavity feeding and unconventional photon statistics in solid-state cavity QED revealed by many-level real-time path-integral calculations , 2017, 1704.03347.

[6]  D. Reiter.  Time-resolved pump-probe signals of a continuously driven quantum dot affected by phonons , 2017, 1702.02784.

[7]  V. Zwiller,et al.  Phonon-Assisted Two-Photon Interference from Remote Quantum Emitters , 2017, Nano letters.

[8]  M. S. Skolnick,et al.  Single-photon electroluminescence for on-chip quantum networks , 2016 .

[9]  V. M. Axt,et al.  Path-integral description of combined Hamiltonian and non-Hamiltonian dynamics in quantum dissipative systems , 2016, 1607.00222.

[10]  Matthias Weiss,et al.  Surface acoustic wave regulated single photon emission from a coupled quantum dot-nanocavity system , 2016, 1605.04956.

[11]  Luke R. Wilson,et al.  On-chip interference of single photons from an embedded quantum dot and an external laser , 2016, 1602.08363.

[12]  T. Kuhn,et al.  Fast and selective phonon-assisted state preparation of a quantum dot by adiabatic undressing , 2016, 1601.07886.

[13]  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.

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

[15]  D. McCutcheon,et al.  Optical signatures of non-Markovian behavior in open quantum systems , 2015, 1504.05970.

[16]  M. S. Skolnick,et al.  Phonon-assisted population inversion of a single InGaAs/GaAs quantum dot by pulsed laser excitation. , 2015, Physical review letters.

[17]  Christian Schneider,et al.  Deterministic and robust generation of single photons from a single quantum dot with 99.5% indistinguishability using adiabatic rapid passage. , 2014, Nano letters.

[18]  G. Abstreiter,et al.  Dissipative preparation of the exciton and biexciton in a self-assembled quantum dot on picosecond timescales , 2014, 1409.6014.

[19]  T. Kuhn,et al.  The role of phonons for exciton and biexciton generation in an optically driven quantum dot , 2014, Journal of physics. Condensed matter : an Institute of Physics journal.

[20]  P. Michler,et al.  Phonon-assisted robust and deterministic two-photon biexciton preparation in a quantum dot , 2014, 1408.7027.

[21]  V. M. Axt,et al.  Proposed robust and high-fidelity preparation of excitons and biexcitons in semiconductor quantum dots making active use of phonons. , 2013, Physical review letters.

[22]  Jian-Wei Pan,et al.  On-demand semiconductor single-photon source with near-unity indistinguishability. , 2012, Nature nanotechnology.

[23]  Mihail D. Croitoru,et al.  Real-time path integrals for quantum dots: Quantum dissipative dynamics with superohmic environment coupling , 2011 .

[24]  J. Mørk,et al.  Non-markovian model of photon-assisted dephasing by electron-phonon interactions in a coupled quantum-dot-cavity system. , 2009, Physical review letters.

[25]  M. S. Skolnick,et al.  Damping of exciton Rabi rotations by acoustic phonons in optically excited InGaAs/GaAs quantum dots. , 2009, Physical review letters.

[26]  F. Peeters,et al.  Nonmonotonic field dependence of damping and reappearance of Rabi oscillations in quantum dots. , 2007, Physical review letters.

[27]  F. Rossi,et al.  Pure dephasing and phonon dynamics in GaAs- and GaN-based quantum dot structures : Interplay between material parameters and geometry , 2005 .

[28]  A. Knorr,et al.  Phonon-assisted damping of Rabi oscillations in semiconductor quantum dots. , 2003, Physical review letters.

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

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

[31]  T. Kuhn,et al.  Theory of pure dephasing and the resulting absorption line shape in semiconductor quantum dots , 2002 .

[32]  D. Bimberg,et al.  Ultralong dephasing time in InGaAs quantum dots. , 2001, Physical review letters.

[33]  L. Marsal,et al.  Acoustic phonon broadening mechanism in single quantum dot emission , 2001 .

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

[35]  Y. Yamamoto,et al.  Triggered single photons from a quantum dot. , 2000, Physical review letters.

[36]  N. Makri,et al.  TENSOR PROPAGATOR FOR ITERATIVE QUANTUM TIME EVOLUTION OF REDUCED DENSITY MATRICES. I: THEORY , 1995 .

[37]  R. H. Brown,et al.  A Test of a New Type of Stellar Interferometer on Sirius , 1956, Nature.

[38]  N. Makri,et al.  Tensor propagator for iterative quantum time evolution of reduced density matrices. II. Numerical methodology , 1995 .