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09:23
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
Shaping an itinerant quantum field into a multimode squeezed vacuum by dissipation
Diego Porras1, Juan José García-Ripoll
1Departamento de Física Teórica I, Universidad Complutense, 28040 Madrid, Spain.
Physical Review Letters
|March 10, 2012
Summary
Researchers cooled photon fields to a multimode squeezed vacuum using sideband emission and dissipative repumping. This method generates tunable multimode squeezed light in circuit-quantum electrodynamics (circuit-QED) systems without strong coupling.
Area of Science:
- Quantum optics
- Condensed matter physics
- Circuit-quantum electrodynamics (circuit-QED)
Background:
- Generating multimode squeezed vacuum states is crucial for quantum information processing and sensing.
- Existing methods often require strong coupling regimes or discrete modes, limiting practical applications.
Purpose of the Study:
- To demonstrate a novel method for cooling photon fields to a multimode squeezed vacuum.
- To develop a source of tunable multimode squeezed light compatible with circuit-QED architectures.
Main Methods:
- Inducing sidebands in the emission of a single emitter into a one-dimensional waveguide.
- Implementing a dissipative repumping process to enhance photon field cooling.
- Utilizing a continuum of propagating field modes for efficient squeezing.
Main Results:
- Achieved cooling of a photon field down to a multimode squeezed vacuum state.
- Demonstrated that the method operates effectively outside the strong coupling regime.
- Confirmed the generation of tunable multimode squeezed light.
Conclusions:
- The proposed method offers a practical approach to generating multimode squeezed vacuum states.
- This technique is well-suited for integration into existing circuit-QED systems.
- The generated tunable squeezed light sources have significant potential for quantum technologies.
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