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Optical Interferometry with Quantum Networks.

E T Khabiboulline1, J Borregaard1,2, K De Greve1

  • 1Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.

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Summary
This summary is machine-generated.

We introduce a quantum network method for optical interferometry in telescope arrays. This approach uses quantum state storage and entanglement-assisted parity checks to extract phase differences, enabling advanced astronomical imaging.

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Area of Science:

  • Quantum physics
  • Astronomy
  • Optical interferometry

Background:

  • Optical interferometry in telescope arrays faces challenges with transmission losses.
  • Existing methods require significant entanglement bandwidth.

Purpose of the Study:

  • To propose a novel method for optical interferometry in telescope arrays using quantum networks.
  • To overcome limitations of current interferometry techniques, particularly transmission losses and entanglement bandwidth.

Main Methods:

  • Storing quantum states of incoming photons and arrival times in binary qubit codes.
  • Utilizing entanglement-assisted parity checks for nonlocal quantum state retrieval.
  • Employing efficient quantum data compression techniques.

Main Results:

  • Direct extraction of phase difference by circumventing transmission losses.
  • An exponential decrease in required entanglement bandwidth compared to prior proposals.
  • Feasible experimental implementation with near-term quantum technology.

Conclusions:

  • The proposed quantum-assisted optical interferometry method is practical with near-term technology.
  • This technique enables optical imaging of astronomical objects with enhanced resolution.
  • It offers a significant advancement over classical and previous quantum interferometry approaches.