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Deterministic Generation of Large Fock States.
M Uria1, P Solano2,3, C Hermann-Avigliano1
1Departamento de Física and Millennium Institute for Research in Optics (MIRO), Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago 8370448, Chile.
Physical Review Letters
|September 11, 2020
Summary
Researchers developed a method to create large photon number states, a significant step towards macroscopic quantum states. This technique deterministically prepares the electromagnetic field in a Fock state using two-level systems.
Area of Science:
- Quantum optics
- Quantum information science
Background:
- Generating Fock states is crucial for quantum technologies.
- Previous methods often required postselection or were limited in photon number.
Purpose of the Study:
- To present a protocol for deterministic preparation of large photon number Fock states.
- To demonstrate the feasibility of the scheme with realistic parameters.
Main Methods:
- Starting with a coherent state, the electromagnetic field interacts resonantly with one or few two-level systems.
- The interaction deterministically evolves the field into a coherently displaced Fock state without postselection.
Main Results:
- The protocol can generate Fock states with photon numbers around 100 (n~100).
- Optimal fidelities above 70% are achievable.
- The scheme is feasible under realistic experimental parameters.
Conclusions:
- This method provides a pathway to generate large Fock states, approaching the boundary between quantum and macroscopic regimes.
- It offers a significant advancement for quantum optics and quantum information processing.
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