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Unconditional Preparation of Squeezed Vacuum from Rabi Interactions
Jacob Hastrup1, Kimin Park1,2, Radim Filip2
1Center for Macroscopic Quantum States (bigQ), Department of Physics, Technical University of Denmark, Building 307, Fysikvej, 2800 Kongens Lyngby, Denmark.
Physical Review Letters
|April 30, 2021
Summary
Researchers developed a new method to create highly squeezed states for quantum technologies. This approach uses minimal quantum gates, improving efficiency for quantum sensing and computation.
Area of Science:
- Quantum physics
- Quantum optics
- Quantum information science
Background:
- Squeezed states of harmonic oscillators are crucial for continuous-variable quantum applications.
- Generating high-quality squeezed states with minimal resources is an ongoing challenge.
Purpose of the Study:
- To propose an efficient method for generating highly squeezed vacuum states.
- To achieve low excess antisqueezing using a simplified protocol.
Main Methods:
- Utilizing a Rabi-type interaction Hamiltonian between oscillators and qubits.
- Employing only a few oscillator-qubit coupling gates.
- Leveraging demonstrated implementation methods in superconducting circuits and trapped ions.
Main Results:
- Generation of very good approximations to highly squeezed vacuum states.
- Achieved low excess antisqueezing, a key metric for state quality.
- Demonstrated compatibility with existing quantum harmonic oscillator manipulation protocols.
Conclusions:
- The proposed method offers an efficient route to high-quality squeezed states.
- This protocol enhances scalability for continuous-variable quantum computation.
- It provides a valuable tool for advancing quantum sensing, computation, and communication.
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