2015/08/31 by Christoph Ohm, Fabian Hassler · 7 citations
Computer Science · Physics and Astronomy · #Entanglement distillation #Multipartite entanglement #Photon #Photon entanglement #Physics #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum computer #Quantum entanglement #Quantum mechanics #Quantum optics and atomic interactions #Qubit #Squashed entanglement #Superconducting quantum computing #Transmon #W state #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1088/1367-2630/aa6d46
published in New Journal of Physics 19(5), 053018 (IOP Publishing) · 18 pages, 2 figures; to be published in NJP
openalex publication_date 2017/04/13 · arxiv created 2017/05/01 · arxiv updated 2017/05/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
On-demand creation of entanglement between distant qubits is a necessary ingredient for distributed quantum computation. We propose an entanglement scheme that allows for single-shot deterministic entanglement creation by detecting a single photon passing through a Mach–Zehnder interferometer with one transmon qubit in each arm. The entanglement production essentially relies on the fact that superconducting microwave structures allow one to achieve strong coupling between the qubit and the photon. By detecting the photon via a photon counter, a parity measurement is implemented and the wave function of the two qubits is projected onto a maximally entangled state. Most importantly, the entanglement generation is heralded such that our protocol is not susceptible to photon loss due to the indivisible nature of single photons.