Nuclear Quantum Memory and Time Sequencing of a Single γ Photon

Area of Science:

• Quantum Information Science
• Nuclear Physics
• Photonics

Background:

• Quantum memory is crucial for quantum information processing.
• Storing and manipulating single gamma-ray photons presents significant challenges.
• Existing quantum memory techniques are not suitable for the high frequencies of gamma photons.

Purpose of the Study:

• To propose a novel technique for quantum memory of single gamma-ray photons.
• To demonstrate reliable storage, on-demand generation, and time sequencing of single gamma photons.
• To establish a gamma-photon-nuclear-ensemble interface for quantum applications.

Main Methods:

• Utilizing a Doppler frequency comb generated by resonantly absorbing nuclear targets moving at different velocities.
• Implementing a system for controlled interaction between gamma photons and nuclear ensembles.
• Developing a method for coherent manipulation of nuclear target velocities to control photon states.

Main Results:

• Successfully demonstrated the principle of gamma-ray photon quantum memory.
• Achieved reliable storage and retrieval of single gamma photons.
• Showcased on-demand generation and precise time sequencing of gamma photons.

Conclusions:

• The proposed Doppler frequency comb technique offers a viable solution for gamma-ray photon quantum memory.
• This work establishes the first gamma-photon-nuclear-ensemble interface, opening new avenues in quantum information science.
• The developed method paves the way for future quantum technologies utilizing high-energy photons.