411 citations · 1.6k across the 27 of their papers we have counts for
28 papers
A Fibre-Integrated SPDC Heralded Single-Photon Source Using Zn-Indiffused PPLN Ridge Waveguides at Telecom Wavelengths
Peter Iveson, Paolo L. Mennea, Goronwy Tawy +7
We report a fibre-integrated heralded single-photon source based on a commercial Zn-indiffused MgO:PPLN ridge waveguide operated in Type-0 degenerate spontaneous parametric down-co…
Dynamic rephasing in a telecom warm vapor quantum memory
Ilse Maillette de Buy Wenniger, Paul Burdekin, Shicheng Zhang +6
The Off-Resonant Cascaded Absorption (ORCA) protocol in warm atomic vapors offers a scalable platform for high-bandwidth, low noise quantum memories, but its coherence time is fund…
Single-Photon-Level Atomic Frequency Comb Storage in Room Temperature Alkali Vapour
Zakary Schofield, Vanderli Laurindo, Ori Ezrah Mor +1
We have demonstrated the coherent storage and retrieval of single-photon-level light using the atomic frequency comb protocol in a room temperature rubidium vapour. Velocity-select…
Topical White Paper: A Case for Quantum Memories in Space
Mustafa Gündoğan, Thomas Jennewein, Faezeh Kimiaee Asadi +20
It has recently been theoretically shown that Quantum Memories (QM) could enable truly global quantum networking when deployed in space thereby surpassing the limited range of land…
Gigahertz-Bandwidth Optical Memory in Pr:YSiO
M. Nicolle, J. N. Becker, C. Weinzetl +2
We experimentally study a broadband implementation of the atomic frequency comb (AFC) rephasing protocol with a cryogenically cooled Pr:YSiO crystal. To allow for st…
Preparing Narrow Velocity Distributions for Quantum Memories in Room-Temperature Alkali Vapours
D. Main, T. M. Hird, S. Gao +4
Quantum memories are a crucial technology for enabling large-scale quantum networks through synchronisation of probabilistic operations. Such networks impose strict requirements on…
Room Temperature Atomic Frequency Comb Memory for Light
D. Main, T. M. Hird, S. Gao +2
We demonstrate coherent storage and retrieval of pulsed light using the atomic frequency comb quantum memory protocol in a room temperature alkali vapour. We utilise velocity-selec…
Raman Quantum Memory with Built-In Suppression of Four-wave Mixing Noise
Sarah E. Thomas, Thomas M. Hird, Joseph H. D. Munns +5
Quantum memories are essential for large-scale quantum information networks. Along with high efficiency, storage lifetime and optical bandwidth, it is critical that the memory add…
Optimal Coherent Filtering for Single Noisy Photons
S. Gao, O. Lazo-Arjona, B. Brecht +6
We introduce a filter using a noise-free quantum buffer with large optical bandwidth that can both filter temporal-spectral modes, as well as inter-convert them and change their fr…
A two-way photonic interface for linking Sr+ transition at 422 nm to the telecommunications C-band
Thomas A. Wright, Robert J. A. Francis-Jones, Corin B. E. Gawith +7
We report a single-stage bi-directional interface capable of linking Sr+ trapped ion qubits in a long-distance quantum network. Our interface converts photons between the Sr+ emiss…
Experimental demonstration of quantum effects in the operation of microscopic heat engines
James Klatzow, Jonas N. Becker, Patrick M. Ledingham +7
The heat engine, a machine that extracts useful work from thermal sources, is one of the basic theoretical constructs and fundamental applications of classical thermodynamics. The…
High-speed noise-free optical quantum memory
K. T. Kaczmarek, P. M. Ledingham, B. Brecht +9
Quantum networks promise to revolutionise computing, simulation, and communication. Light is the ideal information carrier for quantum networks, as its properties are not degraded…
Quantum correlations between single telecom photons and a multimode on-demand solid state quantum memory
Alessandro Seri, Andreas Lenhard, Daniel Rieländer +4
Quantum correlations between long lived quantum memories and telecom photons that can propagate with low loss in optical fibers are an essential resource for the realization of lar…
High Efficiency Raman Memory by Suppressing Radiation Trapping
S. E. Thomas, J. H. D. Munns, K. T. Kaczmarek +7
Raman interactions in alkali vapours are used in applications such as atomic clocks, optical signal processing, generation of squeezed light and Raman quantum memories for temporal…
Theory of noise suppression in Λ-type quantum memories by means of a cavity
J. Nunn, S. Thomas, J. H. D. Munns +10
Quantum memories, capable of storing single photons or other quantum states of light, to be retrieved on-demand, offer a route to large-scale quantum information processing with li…
In Situ Characterisation of an Optically Thick Atom-Filled Cavity
J. H. D. Munns, C. Qiu, P. M. Ledingham +3
A means for precise experimental characterization of the dielectric susceptibility of an atomic gas inside and optical cavity is important for design and operation of quantum light…
A Cavity-Enhanced Room-Temperature Broadband Raman Memory
D. J. Saunders, J. H. D. Munns, T. F. M. Champion +6
Broadband quantum memories hold great promise as multiplexing elements in future photonic quantum information protocols. Alkali vapour Raman memories combine high-bandwidth storage…
Ultrahigh and persistent optical depths of caesium in Kagomé-type hollow-core photonic crystal fibres
Krzysztof T. Kaczmarek, Dylan J. Saunders, Michael R. Sprague +7
Alkali-filled hollow-core fibres are a promising medium for investigating light-matter interactions, especially at the single-photon level, due to the tight confinement of light an…
A solid state spin-wave quantum memory for time-bin qubits
Mustafa Gündoğan, Patrick M. Ledingham, Kutlu Kutluer +2
We demonstrate the first solid-state spin-wave optical quantum memory with on-demand read-out. Using the full atomic frequency comb scheme in a \PrYSO crystal, we store weak cohere…
Storage of up-converted telecom photons in a doped crystal
Nicolas Maring, Kutlu Kutluer, Joachim Cohen +4
We report on an experiment that demonstrates the frequency up-conversion of telecommunication wavelength single-photon-level pulses to be resonant with a :$\mathr…
Quantum Storage of Heralded Single Photons in a Praseodymium Doped Crystal
Daniel Rieländer, Kutlu Kutluer, Patrick Ledingham +4
We report on experiments demonstrating the reversible mapping of heralded single photons to long lived collective optical atomic excitations stored in a Pr:YSiO crys…
Coherent Storage of Temporally Multimode Light Using a Spin-Wave Atomic Frequency Comb Memory
Mustafa Gündoğan, Margherita Mazzera, Patrick M. Ledingham +2
We report on coherent and multi-temporal mode storage of light using the full atomic frequency comb memory scheme. The scheme involves the transfer of optical atomic excitations in…
Experimental realization of light with time separated correlations by rephasing amplified spontaneous emission
Patrick M. Ledingham, William R. Naylor, Jevon J. Longdell
Amplified spontaneous emission is a common noise source in active optical systems, it is generally seen as being an incoherent process. Here we excite an ensemble of rare earth ion…
Quantum Storage of a Photonic Polarization Qubit in a Solid
Mustafa Gündoğan, Patrick M. Ledingham, Attaallah Almasi +2
We report on the quantum storage and retrieval of photonic polarization quantum bits onto and out of a solid state storage device. The qubits are implemented with weak coherent sta…