title: Multiple intrinsically identical single-photon emitters in the solid state.
abstract: Emitters of indistinguishable single photons are crucial for the growing field of quantum technologies. To realize scalability and increase the complexity of quantum optics technologies, multiple independent yet identical single-photon emitters are required. However, typical solid-state single-photon sources are inherently dissimilar, necessitating the use of electrical feedback or optical cavities to improve spectral overlap between distinct emitters. Here we demonstrate bright silicon vacancy (SiV(-)) centres in low-strain bulk diamond, which show spectral overlap of up to 91% and nearly transform-limited excitation linewidths. This is the first time that distinct single-photon emitters in the solid state have shown intrinsically identical spectral properties. Our results have impact on the application of single-photon sources for quantum optics and cryptography.
authors.affiliation: Institute for Quantum Optics and Center for Integrated Quantum Science and Technology (IQst), Ulm University, Albert-Einstein-Allee 11, Ulm D-89081, Germany.
authors.forename: L J
authors.initials: LJ
authors.lastname: Rogers
authors.affiliation: Institute for Quantum Optics and Center for Integrated Quantum Science and Technology (IQst), Ulm University, Albert-Einstein-Allee 11, Ulm D-89081, Germany.
authors.forename: K D
authors.initials: KD
authors.lastname: Jahnke
authors.affiliation: National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Teraji
authors.affiliation: Institute for Quantum Optics and Center for Integrated Quantum Science and Technology (IQst), Ulm University, Albert-Einstein-Allee 11, Ulm D-89081, Germany.
authors.forename: L
authors.initials: L
authors.lastname: Marseglia
authors.affiliation: Institute for Quantum Optics and Center for Integrated Quantum Science and Technology (IQst), Ulm University, Albert-Einstein-Allee 11, Ulm D-89081, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Müller
authors.affiliation: Institute for Quantum Optics and Center for Integrated Quantum Science and Technology (IQst), Ulm University, Albert-Einstein-Allee 11, Ulm D-89081, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Naydenov
authors.affiliation: Institute for Quantum Optics and Center for Integrated Quantum Science and Technology (IQst), Ulm University, Albert-Einstein-Allee 11, Ulm D-89081, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Schauffert
authors.affiliation: Institute of Analytical and Bioanalytical Chemistry, Ulm University, Ulm D-89081, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Kranz
authors.affiliation: Research Center for Knowledge Communities, University of Tsukuba, 1-2 Kasuga, Tsukuba, Ibaraki 305-8550, Japan.
authors.forename: J
authors.initials: J
authors.lastname: Isoya
authors.affiliation: Institute for Quantum Optics and Center for Integrated Quantum Science and Technology (IQst), Ulm University, Albert-Einstein-Allee 11, Ulm D-89081, Germany.
authors.forename: L P
authors.initials: LP
authors.lastname: McGuinness
authors.affiliation: Institute for Quantum Optics and Center for Integrated Quantum Science and Technology (IQst), Ulm University, Albert-Einstein-Allee 11, Ulm D-89081, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Jelezko