Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

arXiv:cond-mat/0511336 · Physical Review B

Polariton quantum blockade in a photonic dot

A. Verger, Cristiano Ciuti, Iacopo Carusotto

Published May 12, 2006• 244 citations
arXivHTMLPDF

Abstract

We investigate the quantum nonlinear dynamics of a resonantly excited photonic quantum dot embedding a quantum well in the strong exciton-photon coupling regime. Within a master equation approach, we study the polariton blockade effect due to polariton-polariton interactions as a function of the photonic dot geometry, spectral linewidths and energy detuning between quantum well exciton and confined photon mode. The second order coherence function ${g}^{(2)}(t,{t}^{\ensuremath{'}})$ and the photon antibunching are calculated for both continuous wave and pulsed excitations.

DOI
10.1103/physrevb.73.193306

Related papers

Quantum correlations and dissipative blockade of polaritons in a tunable fiber cavity

Gian-Marco Schnüriger, Martin Kroner, Emre Togan +5 more

Cavity exciton--polaritons are quasiparticles that form when quantum well excitons hybridize with a cavity mode. Here, we carry out photon correlation measurements under continuous wave resonant laser excitation to demonstrate quantum correlations between cavity--polaritons. Our experiments reveal an unexpectedly strong dependence of polariton interactions on cavity--exciton detuning. When the polaritons are predominantly exciton-like, we observe a transition from photon antibunching to bunching as the laser is tuned across the polariton resonance, in agreement with a simple Kerr-nonlinearity model. When the lower-branch polariton energy is tuned to induce a two-polariton Feshbach resonance with the biexciton mode, the degree of polariton antibunching becomes independent of the laser detuning: we explain our finding by invoking a dissipative blockade mechanism arising from large biexciton broadening. Our experiments demonstrate that the strong polariton blockade regime would be achieved by reducing the polariton decay rate by a factor of 10.

arXiv:2603.23002•Physical Review Letters•Oct 19, 2026•1 citation

Photon blockade in a bimode nonlinear nanocavity embedded with a quantum dot

Xinyun Liang, Zhenglu Duan, Qin Guo +3 more

We study the photon antibunching effect in a bimode nano-optical cavity filled with the second-order nonlinear material and embedded with a quantum dot. Analytical results show that both the conventional photon blockade (CPB) induced by the nonlinear interaction between polaritons and the unconventional photon blockade (UCPB) induced by the quantum interference appear in our model. In particular, we find that CPB and UCPB can simultaneously occur in an overlapped parameter regime, which allows one to prepare a single-photon source with high purity and high brightness in the strong-coupling regime. Furthermore, owing to the multipathway interference in this composite model, the photon antibunching effect is significantly enhanced compared to that in the Jaynes-Cummings model and in the degenerate optical parametric amplifier in the weak-coupling regime.

arXiv:1912.05246•Physical Review A•Nov 13, 2020•42 citations

Polariton bunching and anti-bunching in a photonic dot controlled by a magnetic field

Yongyou Zhang, Guojun Jin

Using the Liouville--von Neumann equation, we study the polarization dynamics of the polaritons localized in a photonic dot excited by continuous-wave (cw) or pulse laser beams. Pumped by the cw and circularly polarized laser, in the weak magnetic-field region we find a strong polariton anti-bunching and a platform behavior in the variation in the polariton occupation with the pump field, and the latter manifestly displays the polariton quantum blockade. In the case of using the cw and linearly polarized laser, we find the redshift of the polariton energy in the polariton magnetic spectrums, due to the effective-attractive interaction between the polaritons with antiparallel spins; moreover the polaritons with antiparallel spins are always anti-bunching in the low excitation regime. Especially, we demonstrate the single-photon character of the photonic dot in the excitation of the pulsed wave and linearly polarized laser, and the emitted-photon polarization can be conveniently adjusted by an applied magnetic field.

Physical Review B•May 1, 2009•17 citations

Strong photon antibunching in weakly nonlinear two-dimensional exciton-polaritons

Albert Ryou, David Rosser, Abhi Saxena +2 more

A deterministic and scalable array of single photon nonlinearities in the solid state holds great potential for both fundamental physics and technological applications, but its realization has proved extremely challenging. Despite significant advances, leading candidates such as quantum dots and group III-V quantum wells have yet to overcome their respective bottlenecks in random positioning and weak nonlinearity. Here we consider a hybrid light-matter platform, marrying an atomically thin two-dimensional material to a photonic crystal cavity, and analyze its second-order coherence function. We identify several mechanisms for photon antibunching under different system parameters, including one characterized by large dissipation and weak nonlinearity. Finally, we show that by patterning the two-dimensional material into different sizes, we can drive our system dynamics from a coherent state into a regime of strong antibunching with second-order coherence function ${g}^{(2)}(0)\ensuremath{\sim}{10}^{\ensuremath{-}3}$, opening a possible route to scalable, on-chip quantum simulations with correlated photons.

arXiv:1802.01816•Physical review. B./Physical review. B•Jun 11, 2018•26 citations

Strongly interacting photons in quantum dot cavity-QED

Andreas Reinhard, Thomas Volz, Ataç İmamoğlu

Here, we show unmistakable signatures of photon blockade in a strongly coupled single-quantum dot (QD) cavity system by demonstrating anti-bunching of photons upon pulsed resonant excitation of the lowest energy polariton state. When we tune the laser into two-photon resonance with the higher-lying polariton states, we observe strong bunching.

Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)•May 1, 2011•0 citations

Dynamics of the excitations of a quantum dot in a microcavity

J. I. Perea, Diego Porras, C. Tejedor

We study the dynamics of a quantum dot embedded in a three-dimensional microcavity in the strong coupling regime in which the quantum dot exciton has an energy close to the frequency of a confined cavity mode. Under the continuous pumping of the system, the confined electron and hole can recombine either by spontaneous emission through a leaky mode or by stimulated emission of a cavity mode that can escape from the cavity. The numerical integration of a master equation including all these effects gives the dynamics of the density matrix. By using the quantum regression theorem, we compute the first- and second-order coherence functions required to calculate the photon statistics and the spectrum of the emitted light. Our main result is the determination of a range of parameters in which a state of cavity modes with Poissonian or sub-Poissonian (nonclassical) statistics can be built up within the microcavity. Depending on the relative values of pumping and rate of stimulated emission, either one or two peaks close to the excitation energy of the dot and/or to the natural frequency of the cavity are observed in the emission spectrum. The physics behind these results is discussed.

arXiv:cond-mat/0310570•Physical Review B•Sep 9, 2004•60 citations
We investigate the quantum nonlinear dynamics of a resonantly excited photonic quantum dot embedding a quantum well in the strong exciton-photon coupling regime. Within a master equation approach, we study the polariton blockade effect due to polariton-polariton interactions as a function of the photonic dot geometry, spectral linewidths and energy detuning between quantum well exciton and confined photon mode. The second order coherence function g(2)(t,t\ensuremath′){g}^{(2)}(t,{t}^{\ensuremath{'}})g(2)(t,t\ensuremath′) and the photon antibunching are calculated for both continuous wave and pulsed excitations.
Cavity exciton--polaritons are quasiparticles that form when quantum well excitons hybridize with a cavity mode. Here, we carry out photon correlation measurements under continuous wave resonant laser excitation to demonstrate quantum correlations between cavity--polaritons. Our experiments reveal an unexpectedly strong dependence of polariton interactions on cavity--exciton detuning. When the polaritons are predominantly exciton-like, we observe a transition from photon antibunching to bunching as the laser is tuned across the polariton resonance, in agreement with a simple Kerr-nonlinearity model. When the lower-branch polariton energy is tuned to induce a two-polariton Feshbach resonance with the biexciton mode, the degree of polariton antibunching becomes independent of the laser detuning: we explain our finding by invoking a dissipative blockade mechanism arising from large biexciton broadening. Our experiments demonstrate that the strong polariton blockade regime would be achieved by reducing the polariton decay rate by a factor of 10.
We study the photon antibunching effect in a bimode nano-optical cavity filled with the second-order nonlinear material and embedded with a quantum dot. Analytical results show that both the conventional photon blockade (CPB) induced by the nonlinear interaction between polaritons and the unconventional photon blockade (UCPB) induced by the quantum interference appear in our model. In particular, we find that CPB and UCPB can simultaneously occur in an overlapped parameter regime, which allows one to prepare a single-photon source with high purity and high brightness in the strong-coupling regime. Furthermore, owing to the multipathway interference in this composite model, the photon antibunching effect is significantly enhanced compared to that in the Jaynes-Cummings model and in the degenerate optical parametric amplifier in the weak-coupling regime.
Using the Liouville--von Neumann equation, we study the polarization dynamics of the polaritons localized in a photonic dot excited by continuous-wave (cw) or pulse laser beams. Pumped by the cw and circularly polarized laser, in the weak magnetic-field region we find a strong polariton anti-bunching and a platform behavior in the variation in the polariton occupation with the pump field, and the latter manifestly displays the polariton quantum blockade. In the case of using the cw and linearly polarized laser, we find the redshift of the polariton energy in the polariton magnetic spectrums, due to the effective-attractive interaction between the polaritons with antiparallel spins; moreover the polaritons with antiparallel spins are always anti-bunching in the low excitation regime. Especially, we demonstrate the single-photon character of the photonic dot in the excitation of the pulsed wave and linearly polarized laser, and the emitted-photon polarization can be conveniently adjusted by an applied magnetic field.
A deterministic and scalable array of single photon nonlinearities in the solid state holds great potential for both fundamental physics and technological applications, but its realization has proved extremely challenging. Despite significant advances, leading candidates such as quantum dots and group III-V quantum wells have yet to overcome their respective bottlenecks in random positioning and weak nonlinearity. Here we consider a hybrid light-matter platform, marrying an atomically thin two-dimensional material to a photonic crystal cavity, and analyze its second-order coherence function. We identify several mechanisms for photon antibunching under different system parameters, including one characterized by large dissipation and weak nonlinearity. Finally, we show that by patterning the two-dimensional material into different sizes, we can drive our system dynamics from a coherent state into a regime of strong antibunching with second-order coherence function ${g}^{(2)}(0)\ensuremath{\sim}{10}^{\ensuremath{-}3}$, opening a possible route to scalable, on-chip quantum simulations with correlated photons.
We study the dynamics of a quantum dot embedded in a three-dimensional microcavity in the strong coupling regime in which the quantum dot exciton has an energy close to the frequency of a confined cavity mode. Under the continuous pumping of the system, the confined electron and hole can recombine either by spontaneous emission through a leaky mode or by stimulated emission of a cavity mode that can escape from the cavity. The numerical integration of a master equation including all these effects gives the dynamics of the density matrix. By using the quantum regression theorem, we compute the first- and second-order coherence functions required to calculate the photon statistics and the spectrum of the emitted light. Our main result is the determination of a range of parameters in which a state of cavity modes with Poissonian or sub-Poissonian (nonclassical) statistics can be built up within the microcavity. Depending on the relative values of pumping and rate of stimulated emission, either one or two peaks close to the excitation energy of the dot and/or to the natural frequency of the cavity are observed in the emission spectrum. The physics behind these results is discussed.