Entanglement of distinguishable quantum memories

Abstract

Time-resolved photon detection can be used to generate entanglement between distinguishable photons. This technique can be extended to entangle quantum memories that emit photons with different frequencies and identical temporal profiles without the loss of entanglement rate or fidelity. We experimentally realize this process using remotely trapped ${}^{171}$Yb${}^{+}$ ions where heralded entanglement is generated by interfering distinguishable photons. This technique may be necessary for future modular quantum systems and networks that are composed of heterogeneous qubits.

5 pages, 5 figures

References in corpus (5)

• Manipulation and Detection of a Trapped Yb+ Ion Hyperfine Qubit
• Bell inequality violation with two remote atomic qubits
• Efficient Teleportation between Remote Single-Atom Quantum Memories
• Entangling Color-Different Photons via Time-Resolved Measurement and Active Feed-Forward
• Effect of frequency mismatched photons in quantum information processing

Cited by in corpus (4)

• Efficient polarisation-preserving frequency conversion from a trapped-ion-compatible wavelength to the telecom C band
• Ion trap architectures and new directions
• Spectral noise in quantum frequency down-conversion from the visible to the telecommunication C-band
• Spectral stability of cavity-enhanced single-photon emitters in silicon