Generation of a time-bin Greenberger--Horne--Zeilinger state with an optical switch
arXiv:2304.05683 · doi:10.1088/2058-9565/acc7c2
Abstract
Multipartite entanglement is a critical resource in quantum information processing that exhibits much richer phenomenon and stronger correlations than in bipartite systems. This advantage is also reflected in its multi-user applications. Although many demonstrations have used photonic polarization qubits, polarization-mode dispersion confines the transmission of photonic polarization qubits through an optical fiber. Consequently, time-bin qubits have a particularly important role to play in quantum communication systems. Here, we generate a three-photon time-bin Greenberger-Horne-Zeilinger (GHZ) state using a 2 x 2 optical switch as a time-dependent beam splitter to entangle time-bin Bell states from a spontaneous parametric down-conversion source and a weak coherent pulse. To characterize the three-photon time-bin GHZ state, we performed measurement estimation, showed a violation of the Mermin inequality, and used quantum state tomography to fully reconstruct a density matrix, which shows a state fidelity exceeding 70%. We expect that our three-photon time-bin GHZ state can be used for long-distance multi-user quantum communication.
arXiv comment8 pages, 4 figures, 1 table
References in corpus (48)
- Quantum entanglement
- Quantum Cryptography
- The Quantum Internet
- Experimental quantum teleportation
- Quantum secret sharing
- Experimental loophole-free violation of a Bell inequality using entangled electron spins separated by 1.3 km
- Spins in few-electron quantum dots
- On the Measurement of Qubits
- Persistent entanglement in arrays of interacting particles
- Significant-loophole-free test of Bell's theorem with entangled photons
- Multi-photon entanglement and interferometry
- A strong loophole-free test of local realism
- Observation of three-photon Greenberger-Horne-Zeilinger entanglement
- Efficient Multi-Party Quantum Secret Sharing Schemes
- Resource-efficient linear optical quantum computation
- A quantum network of clocks
- Pulsed energy-time entangled twin-photon source for quantum communication
- Experimental Demonstration of Five-photon Entanglement and Open-destination Teleportation
- Classification of mixed three-qubit states
- All photonic quantum repeaters
- Experimental ten-photon entanglement
- 12-photon entanglement and scalable scattershot boson sampling with optimal entangled-photon pairs from parametric down-conversion
- Separability and distillability of multiparticle quantum systems
- Frequency-encoded photonic qubits for scalable quantum information processing
- Experimental Nonlocality Proof of Quantum Teleportation and Entanglement Swapping
- A classification of entanglement in three-qubit systems
- Experimental Test of Quantum Nonlocality in Four-photon Greenberger-Horne-Zeilinger Entanglement
- Multi-partite entanglement speeds up quantum key distribution in networks
- Experimental quantum repeater without quantum memory
- Quantum teleportation over 100 km of fiber using highly-efficient superconducting nanowire single photon detectors
- Sufficient conditions for three-particle entanglement and their tests in recent experiments
- Full characterization of a three-photon GHZ state using quantum state tomography
- Experimental demonstration of a graph state quantum error-correction code
- Heralded single-photon source utilizing highly nondegenerate, spectrally factorable spontaneous parametric downconversion
- Generation of 1.5-um band time-bin entanglement using spontaneous fiber four-wave mixing and planar lightwave circuit interferometers
- Experimental quantum conference key agreement
- Limits on the heralding efficiencies and spectral purities of spectrally-filtered single photons from photon pair sources
- Finite-key effects in multi-partite quantum key distribution protocols
- Observation of Ten-photon Entanglement Using Thin BiBO Crystals
- Design Considerations for High-purity Heralded Single Photon Sources
- Quantum process tomography of a controlled-phase gate for time-bin qubits
- Loss-tolerant all-photonic quantum repeater with generalized Shor code
- The effects of filtering on the purity of heralded single photons from parametric sources
- Entangling time-bin qubits with a switch
- Addendum to "Sufficient conditions for three-particle entanglement and their tests in recent experiments"
- A measure of tripartite entanglement in bosonic and fermionic systems
- Entanglement generation using a controlled-phase gate for time-bin qubits
- Experimental high-intensity three-photon entangled source