531 citations · 1.4k across the 10 of their papers we have counts for
9 papers · 1 filter
Directional spontaneous emission and lateral Casimir-Polder force on an atom close to a nanofiber
Stefan Scheel, Stefan Yoshi Buhmann, Christoph Clausen +1
We study the spontaneous emission of an excited atom close to an optical nanofiber and the resulting scattering forces. For a suitably chosen orientation of the atomic dipole, the…
Storage of fiber-guided light in a nanofiber-trapped ensemble of cold atoms
C. Sayrin, C. Clausen, B. Albrecht +2
Tapered optical fibers with a nanofiber waist are versatile tools for interfacing light and matter. In this context, laser-cooled atoms trapped in the evanescent field surrounding…
A source of polarization-entangled photon pairs interfacing quantum memories with telecom photons
Christoph Clausen, Felix Bussieres, Alexey Tiranov +5
We present a source of polarization-entangled photon pairs suitable for the implementation of long-distance quantum communication protocols using quantum memories. Photon pairs wit…
Quantum teleportation from a telecom-wavelength photon to a solid-state quantum memory
Felix Bussieres, Christoph Clausen, Alexey Tiranov +11
In quantum teleportation, the state of a single quantum system is disembodied into classical information and purely quantum correlations, to be later reconstructed onto a second sy…
Analysis of a photon number resolving detector based on an ion Coulomb crystal inside an optical cavity
Christoph Clausen, Nicolas Sangouard, Michael Drewsen
The ability to detect single photons with high efficiency is a crucial requirement for various quantum information applications. By combining the storage process of a quantum memor…
Quantum storage of polarization qubits in birefringent and anisotropically absorbing materials
Christoph Clausen, Felix Bussieres, Mikael Afzelius +1
Storage of quantum information encoded into true single photons is an essential constituent of long-distance quantum communication based on quantum repeaters and of optical quantum…
Heralded quantum entanglement between two crystals
Imam Usmani, Christoph Clausen, Felix Bussieres +3
Quantum networks require the crucial ability to entangle quantum nodes. A prominent example is the quantum repeater which allows overcoming the distance barrier of direct transmiss…
Detector imperfections in photon-pair source characterization
P. Sekatski, N. Sangouard, F. Bussieres +3
We analyze how imperfections in single-photon detectors impact the characterization of photon-pair sources. We perform exact calculations to reveal the effects of multi-pair emissi…
Quantum Storage of Photonic Entanglement in a Crystal
Christoph Clausen, Imam Usmani, Felix Bussieres +4
Entanglement is the fundamental characteristic of quantum physics. Large experimental efforts are devoted to harness entanglement between various physical systems. In particular, e…