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Published on: September 5, 2019
Photon Blockade in Weakly Driven Cavity Quantum Electrodynamics Systems with Many Emitters
Rahul Trivedi1, Marina Radulaski1, Kevin A Fischer1
1E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA.
Photon blockade in cavity quantum electrodynamics is analyzed using a new method that simplifies complex calculations. This approach reveals that increasing emitters improves photon blockade in detuned systems but worsens it in resonant ones.
Area of Science:
- Quantum optics
- Cavity quantum electrodynamics
- Solid-state physics
Background:
- Photon blockade is a key quantum effect for quantum information processing.
- Analyzing multi-emitter systems in cavity quantum electrodynamics is computationally intensive.
- Understanding the influence of emitter number and frequency detuning on photon blockade is crucial.
Purpose of the Study:
- To develop an efficient computational method for analyzing photon blockade in coherently driven cavity quantum electrodynamics systems.
- To investigate the impact of increasing the number of quantum emitters on photon blockade.
- To study the effects of resonant and detuned systems, as well as inhomogeneous broadening, on photon blockade.
Main Methods:
- Utilizing the scattering matrix formalism for analysis.
- Approximating weak coherent drives with input single- and two-photon Fock states.
- Reducing computational complexity from exponential to polynomial in the number of emitters.
Main Results:
- The developed method allows analysis of systems with up to ~50 quantum emitters.
- Increasing emitters worsens photon blockade in resonant cavity quantum electrodynamics systems.
- Increasing emitters improves photon blockade in detuned cavity quantum electrodynamics systems.
- Inhomogeneous broadening of emitter frequencies impacts photon blockade statistics.
Conclusions:
- The simplified computational approach enables efficient analysis of complex multi-emitter cavity quantum electrodynamics systems.
- The number of emitters and their frequency detuning significantly influence photon blockade.
- Further investigation into emitter frequency broadening is warranted for practical applications.
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