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Velocity Scanning Tomography for Room-Temperature Quantum Simulation.

Jiefei Wang1,2, Ruosong Mao1, Xingqi Xu1

  • 1Zhejiang Key Laboratory of Micro-Nano Quantum Chips and Quantum Control, School of Physics, and State Key Laboratory for Extreme Photonics and Instrumentation, <a href="https://ror.org/00a2xv884">Zhejiang University</a>, Hangzhou 310027, China.

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This summary is machine-generated.

Researchers developed a new technique for room-temperature quantum simulation using superradiance lattices. This method overcomes atomic motion challenges, enabling precise measurements and advancing quantum information processing.

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Area of Science:

  • Quantum Physics
  • Atomic Physics
  • Condensed Matter Physics

Background:

  • Quantum simulation uses controllable platforms, often requiring ultracold temperatures for quantum coherence.
  • Superradiance lattices (SLs) enable room-temperature topological physics simulation, but atomic thermal motion hinders accurate measurements.

Purpose of the Study:

  • To develop a method for accurate quantum measurements in room-temperature superradiance lattices.
  • To overcome the challenge of atomic thermal motion in quantum simulations.

Main Methods:

  • Implemented a velocity scanning tomography technique to differentiate atomic responses based on velocity.
  • Analyzed absorption spectra with and without specific atomic velocities.
  • Derived Wannier-Stark ladders and monitored frequency shifts with varying effective electric fields.

Main Results:

  • Achieved cold-atom spectroscopic resolution in room-temperature SLs.
  • Successfully derived Wannier-Stark ladders, with strengths proportional to atomic velocities.
  • Extracted the Zak phase by observing ladder frequency shifts, demonstrating topological band winding.

Conclusions:

  • Demonstrated the feasibility of room-temperature quantum simulation.
  • The velocity scanning tomography technique enhances precision in quantum simulations.
  • Paved the way for quantum information processing applications using room-temperature platforms.