Publications


Photonic qubits, qutrits and ququads accurately prepared and delivered on demand

New Journal of Physics 15 (2013) 053007

PBR Nisbet-Jones, J Dilley, A Holleczek, O Barter, A Kuhn

Reliable encoding of information in quantum systems is crucial to all approaches to quantum information processing or communication. This applies in particular to photons used in linear optics quantum computing, which is scalable provided a deterministic single-photon emission and preparation is available. Here, we show that narrowband photons deterministically emitted from an atom–cavity system fulfil these requirements. Within their 500 ns coherence time, we demonstrate a subdivision into d time bins of various amplitudes and phases, which we use for encoding arbitrary qu-d-its. The latter is done deterministically with a fidelity >95% for qubits, verified using a newly developed time-resolved quantum-homodyne method.


Single Emitters in Isolated Quantum Systems

Experimental Methods in the Physical Sciences 45 (2013) 467-539

GS Solomon, C Santori, A Kuhn


Control and manipulation of cold atoms in optical tweezers

NEW JOURNAL OF PHYSICS 14 (2012) ARTN 073051

C Muldoon, L Brandt, J Dong, D Stuart, E Brainis, M Himsworth, A Kuhn


Single-photon absorption in coupled atom-cavity systems

PHYSICAL REVIEW A 85 (2012) ARTN 023834

J Dilley, P Nisbet-Jones, BW Shore, A Kuhn


Highly efficient source for indistinguishable single photons of controlled shape

NEW JOURNAL OF PHYSICS 13 (2011) ARTN 103036

PBR Nisbet-Jones, J Dilley, D Ljunggren, A Kuhn


EIT-based quantum memory for single photons from cavity-QED

APPLIED PHYSICS B-LASERS AND OPTICS 103 (2011) 579-589

M Himsworth, P Nisbet, J Dilley, G Langfahl-Klabes, A Kuhn


Three Dimensional Raman Cooling using Velocity Selective Rapid Adiabatic Passage

Chapter in ,

A Kuhn, H Perrin, W Hänsel, C Salomon

We present a new and efficient implementation of Raman cooling of trapped atoms. It uses Raman pulses with an appropriate frequency chirp to realize a velocity selective excitation through a rapid adiabatic passage. This method allows to address in a single pulse a large number of non zero atomic velocity classes and it produces a nearly unity transfer efficiency. We demonstrate this cooling method using cesium atoms in a far-detuned crossed dipole trap. Three-dimensional cooling of $1 \times 10^{5}$ atoms down to $2 \mu$K is performed in 100 ms. In this preliminary experiment the final atomic density is $1.3\times 10^{12}$ at/cm$^3$ (within a factor of 2) and the phase-space density increase over the uncooled sample is 20. Numerical simulations indicate that temperatures below the single photon recoil temperature should be achievable with this method.


Spatial light modulators for the manipulation of individual atoms

APPLIED PHYSICS B-LASERS AND OPTICS 102 (2011) 443-450

L Brandt, C Muldoon, T Thiele, J Dong, E Brainis, A Kuhn


Single photons made-to-measure

NEW JOURNAL OF PHYSICS 12 (2010) ARTN 063024

GS Vasilev, D Ljunggren, A Kuhn


Cavity-based single-photon sources

CONTEMPORARY PHYSICS 51 (2010) 289-313

A Kuhn, D Ljunggren


Optimum pulse shapes for stimulated Raman adiabatic passage

PHYSICAL REVIEW A 80 (2009) ARTN 013417

GS Vasilev, A Kuhn, NV Vitanov


Coherent imaging of extended objects

OPTICS COMMUNICATIONS 282 (2009) 465-472

E Brainis, C Muldoon, L Brandt, A Kuhn


Scheme for generating a sequence of single photons of alternating polarization

JOURNAL OF MODERN OPTICS 54 (2007) 1569-1580

T Wilk, HP Specht, SC Webster, G Rempe, A Kuhn


A single-photon server with just one atom

NATURE PHYSICS 3 (2007) 253-255

M Hijlkema, B Weber, HP Specht, SC Webster, A Kuhn, G Rempe


Single-atom single-photon quantum interface

SCIENCE 317 (2007) 488-490

T Wilk, SC Webster, A Kuhn, G Rempe


Polarization-controlled single photons

PHYSICAL REVIEW LETTERS 98 (2007) ARTN 063601

T Wilk, SC Webster, HP Specht, G Rempe, A Kuhn


Characterization of single photons using two-photon interference

in , 53 (2006) 253-289

T Legero, T Wilk, A Kuhn, G Rempe


Three-dimensional cavity cooling and trapping in an optical lattice

PHYSICAL REVIEW A 73 (2006) ARTN 063415

K Murr, S Nussmann, T Puppe, M Hijlkema, B Weber, SC Webster, A Kuhn, G Rempe


Time-resolved and state-selective detection of single freely falling atoms

OPTICS COMMUNICATIONS 264 (2006) 271-277

T Bondo, M Hennrich, T Legero, G Rempe, A Kuhn


Transition from antibunching to bunching in cavity QED

PHYSICAL REVIEW LETTERS 94 (2005) ARTN 053604

M Hennrich, A Kuhn, G Rempe