Nature Search

Direct observation of a few-photon phase shift induced by a single quantum emitter in a waveguide

The ability to imprint phase shifts on light lie at the basis of several classical and quantum light-based information processing primitives. Here, the authors demonstrate the phase shift of an optical field by a single quantum emitter in a waveguide, at the single photon level.

Mathias J. R. Staunstrup
Alexey Tiranov
Hanna Le Jeannic
ResearchOpen Access31 Aug 2024
Nature Communications

Volume: 15, P: 1-5
Violation of Bell inequality by photon scattering on a two-level emitter

A semiconductor quantum dot can passively mediate interactions between two photons, enabling the creation of entangled photon states.

Shikai Liu
Oliver August Dall’Alba Sandberg
Peter Lodahl
ResearchOpen Access19 Jun 2024
Nature Physics

Volume: 20, P: 1429-1433
Publisher Correction: Dynamical photon–photon interaction mediated by a quantum emitter

Hanna Le Jeannic
Alexey Tiranov
Peter Lodahl
Amendments and Corrections17 Oct 2022
Nature Physics

Volume: 18, P: 1379
Experimental certification of millions of genuinely entangled atoms in a solid

The presence of entanglement in macroscopic systems is notoriously difficult to observe. Here, the authors develop a witness which allow them to demonstrate entanglement between millions of atoms in a solid-state quantum memory prepared by the heralded absorption of a single photon.

Florian Fröwis
Peter C. Strassmann
Nicolas Gisin
ResearchOpen Access13 Oct 2017
Nature Communications

Volume: 8, P: 1-6
Quantum teleportation from a telecom-wavelength photon to a solid-state quantum memory

Quantum teleportation of the state of a qubit encoded in the polarization state is demonstrated from a telecom-wavelength photon to a solid-state quantum memory via 24.8 km of optical fibre. It is the longest distance ever reached in a teleportation experiment involving a quantum memory.

Félix Bussières
Christoph Clausen
Nicolas Gisin
Research21 Sept 2014
Nature Photonics

Volume: 8, P: 775-778
Deterministic photon source of genuine three-qubit entanglement

Entanglement between single photons and solid-state emitters is a key component for photonic quantum computing and networks. Here, using a single electron spin in a quantum dot, the authors present a deterministic photon source achieving three-qubit entanglement of one electron spin and two photons.

Yijian Meng
Ming Lai Chan
Peter Lodahl
ResearchOpen Access05 Sept 2024
Nature Communications

Volume: 15, P: 1-7
Simultaneous coherence enhancement of optical and microwave transitions in solid-state electronic spins

Long coherence times in a subset of states that allows for transitions in both microwave and optical range have been reported using an isotopically purified ¹⁷¹Yb³⁺:Y₂SiO₅ crystal, rendering the system suitable for quantum information applications.

Antonio Ortu
Alexey Tiranov
Mikael Afzelius
Research23 Jul 2018
Nature Materials

Volume: 17, P: 671-675
Dynamical photon–photon interaction mediated by a quantum emitter

Efficient interactions between two photons is a challenging requirement for quantum information processing. A quantum dot coupled to a waveguide produces strong interactions that can induce photon correlations and reshape two-photon wavepackets.

Hanna Le Jeannic
Alexey Tiranov
Peter Lodahl
Research01 Sept 2022
Nature Physics

Volume: 18, P: 1191-1195
On-chip spin-photon entanglement based on photon-scattering of a quantum dot

Ming Lai Chan
Alexey Tiranov
Peter Lodahl
ResearchOpen Access19 May 2023
npj Quantum Information

Volume: 9, P: 1-7

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