Publication

High Fidelity Entanglement in a trapped ion chain
We are seeking to recruit a PhD student to work embedded within the trapped ion team at NPL lead by Dr. Alastair Sinclair to demonstrate multi-qubit entanglement in a 1D ion chain suitable for next-generation quantum metrology.
May 1, 2023
High Fidelity Entanglement in a trapped ion chain
High-efficiency coupled-cavity optical frequency comb generation
Optics Continuum 2, 894 (2023)
We present a high efficiency source of picosecond pulses derived from a dual cavity optical frequency comb generator. This approach …
M. P. Mrozowski, J. Jeffers, J. D. Pritchard
Cite DOI URL
Quantum Error Correction (QuERy)
This project, supported by a Royal Academy of Engineering Senior Research Fellowship and M Squared Lasers, seeks to develop a new experiment focused on creating dual-species arrays of Cs and Rb for quantum error correction. This is integrated within a 4K closed-cycle cryostat to obtain extended trap lifetime for scaling to large numbers of qubits, and will focus on exploiting long-range dipole interactions between Rydberg states of each species to enable mid-circuit, non-destructive readout and generation of topologically protected logical qubits as a route towards fault tolerant digital quantum computing.
Apr 1, 2023
Quantum Error Correction (QuERy)
Demonstration of quantum-enhanced rangefinding robust against classical jamming
(2023)
In this paper we demonstrate operation of a quantum-enhanced lidar based on a continuously pumped photon pair source combined with …
M. P. Mrozowski, R. J. Murchie, J. Jeffers, J. D. Pritchard
Cite DOI URL
Object detection and rangefinding with quantum states using simple detection
(2023)
In a noisy environment with weak single levels, quantum illumination can outperform classical illumination in determining the presence …
R. J. Murchie, J. D. Pritchard, J. Jeffers
Cite DOI URL
Demonstration of a Quantum Gate Using Electromagnetically Induced Transparency
Physical Review Letters 129, 200501 (2022)
We demonstrate a native CNOT gate between two individually addressed neutral atoms based on electromagnetically induced transparency. …
K. McDonnell, L. F. Keary, J. D. Pritchard
Cite DOI URL
High-fidelity multiqubit Rydberg gates via two-photon adiabatic rapid passage
Quantum Science and Technology 7, 045020 (2022)
Abstract We present a robust protocol for implementing high-fidelity multiqubit controlled phase gates ( C k Z ) on neutral atom …
G. Pelegrí, A. J. Daley, J. D. Pritchard
Cite DOI URL
Strong coupling and active cooling in a finite-temperature hybrid atom-cavity system
Physical Review A 105, 013707 (2022)
L. F. Keary, J. D. Pritchard
Cite DOI URL
Optimal State Choice for Rydberg-Atom Microwave Sensors
Physical Review Applied 16, 024008 (2021)
A. Chopinaud, J. Pritchard
Cite DOI URL
Hybrid quantum devices: Guest editorial
Applied Physics Letters 118, 240401 (2021)
An introduction to the APL Special Issue on “Hybrid Quantum Devices” by the guest editors.
Y. Chu, J. D. Pritchard, H. Wang, M. Weides
Cite DOI URL