Mitigation of birefringence in cavity-based quantum networks using frequency-encoded photons
arXiv:2503.05014 · doi:10.1103/PhysRevA.111.062608
Abstract
Atom-cavity systems offer unique advantages for building large-scale distributed quantum computers by providing strong atom-photon coupling while allowing for high-fidelity local operations of atomic qubits. However, in prevalent schemes where the photonic state is encoded in polarization, cavity birefringence introduces an energy splitting of the cavity eigenmodes and alters the polarization states, thus limiting the fidelity of remote entanglement generation. To address this challenge, we propose a scheme that encodes the photonic qubit in the frequency degree-of-freedom. The scheme relies on resonant coupling of multiple transverse cavity modes to different atomic transitions that are well-separated in frequency. We numerically investigate the temporal properties of the photonic wavepacket, two-photon interference visibility, and atom-atom entanglement fidelity under various cavity polarization-mode splittings and find that our scheme is less affected by cavity birefringence. Finally, we propose practical implementations in two trapped ion systems, using the fine structure splitting in the metastable D state of , and the hyperfine splitting in the ground state of . Our study presents an alternative approach for cavity-based quantum networks that is less sensitive to birefringent effects, and is applicable to a variety of atomic and solid-state emitter-cavity interfaces.
13 pages, 6 figures
References in corpus (48)
- The Quantum Internet
- Experimental quantum teleportation
- Logical quantum processor based on reconfigurable atom arrays
- Cavity-based quantum networks with single atoms and optical photons
- Quantum Phases of Matter on a 256-Atom Programmable Quantum Simulator
- Deterministic Single-Photon Source for Distributed Quantum Networking
- Large Scale Modular Quantum Computer Architecture with Atomic Memory and Photonic Interconnects
- Quantum chemistry calculations on a trapped-ion quantum simulator
- Fiber Fabry-Perot cavity with high finesse
- Efficient engineering of multi-atom entanglement through single-photon detections
- Distributed Quantum Computation Based-on Small Quantum Registers
- Spectral multiplexing for scalable quantum photonics using an atomic frequency comb quantum memory and feed-forward control
- High-rate, high-fidelity entanglement of qubits across an elementary quantum network
- Entanglement of Nanophotonic Quantum Memory Nodes in a Telecom Network
- Quantum Beat of Two Single Photons
- Frequency-encoded photonic qubits for scalable quantum information processing
- Tunable ion-photon entanglement in an optical cavity
- Entangling single atoms over 33 km telecom fibre
- Entanglement of trapped-ion qubits separated by 230 meters
- Frequency Bin Entangled Photons
- Electro-Optic Frequency Beamsplitters and Tritters for High-Fidelity Photonic Quantum Information Processing
- Distributed Quantum Computing across an Optical Network Link
- Cavity-based single atom preparation and high-fidelity hyperfine state readout
- Controllable two-photon interference with versatile quantum frequency processor
- Strong coupling of a single ion to an optical cavity
- A Site-Resolved 2D Quantum Simulator with Hundreds of Trapped Ions
- Towards a deterministic interface between trapped-ion qubits and travelling photons
- Quantum-enhanced sensing on an optical transition via emergent collective quantum correlations
- Frequency splitting of polarization eigenmodes in microscopic Fabry-Perot cavities
- A heralded quantum gate between remote quantum memories
- Fully Arbitrary Control of Frequency-Bin Qubits
- How to wire a 1000-qubit trapped ion quantum computer
- Measurement of dipole matrix elements with a single trapped ion
- A quantum-network register assembled with optical tweezers in an optical cavity
- Fundamental Limit on the Efficiency of Single-Photon Generation Based on Cavity Quantum Electrodynamics
- Indistinguishable photons from a trapped-ion quantum network node
- High-fidelity remote entanglement of trapped atoms mediated by time-bin photons
- The computational power of random quantum circuits in arbitrary geometries
- Dual-wavelength fiber Fabry-Perot cavities with engineered birefringence
- Fast photon-mediated entanglement of continuously-cooled trapped ions for quantum networking
- Improving the Indistinguishability of Single Photons from an Ion-Cavity System
- Frequency-bin entanglement-based quantum key distribution
- Polarisation oscillations in birefringent emitter-cavity systems
- Effects of cavity birefringence in polarisation-encoded quantum networks
- Ion-Photonic Frequency Qubit Correlations for Quantum Networks
- Realization of a crosstalk-free two-ion node for long-distance quantum networking
- High-purity single-photon generation based on cavity QED
- Rate-fidelity trade-off in cavity-based remote entanglement generation