All-optical quantum information processing using Rydberg gates (2014)
Journal Article
Paredes-Barato, D., & Adams, C. (2014). All-optical quantum information processing using Rydberg gates. Physical Review Letters, 112(4), Article 040501. https://doi.org/10.1103/physrevlett.112.040501

In this Letter, we propose a hybrid scheme to implement a photonic controlled-z (CZ) gate using photon storage in highly excited Rydberg states, which controls the effective photon-photon interaction using resonant microwave fields. Our scheme decoup... Read More about All-optical quantum information processing using Rydberg gates.

Number-resolved imaging of excited-state atoms using a scanning autoionization microscope (2013)
Journal Article
Lochead, G., Boddy, D., Sadler, D., Adams, C., & Jones, M. (2013). Number-resolved imaging of excited-state atoms using a scanning autoionization microscope. Physical Review A, 87(5), Article 053409. https://doi.org/10.1103/physreva.87.053409

We report on a scanning microscopy technique for atom-number-resolved imaging of excited-state atoms. A tightly focused laser beam leads to local autoionization and the resulting ions are counted electronically. Scanning the beam across the cloud bui... Read More about Number-resolved imaging of excited-state atoms using a scanning autoionization microscope.

Storage and Control of Optical Photons Using Rydberg Polaritons (2013)
Journal Article
Maxwell, D., Szwer, D., Paredes-Barato, D., Busche, H., Pritchard, J., Gauguet, A., …Adams, C. (2013). Storage and Control of Optical Photons Using Rydberg Polaritons. Physical Review Letters, 110(10), Article 103001. https://doi.org/10.1103/physrevlett.110.103001

We use a microwave field to control the quantum state of optical photons stored in a cold atomic cloud. The photons are stored in highly excited collective states (Rydberg polaritons) enabling both fast qubit rotations and control of photon-photon in... Read More about Storage and Control of Optical Photons Using Rydberg Polaritons.

Cooperative Lamb Shift in an Atomic Vapor Layer of Nanometer Thickness (2012)
Journal Article
Keaveney, J., Sargsyan, A., Krohn, U., Hughes, I., Sarkisyan, D., & Adams, C. (2012). Cooperative Lamb Shift in an Atomic Vapor Layer of Nanometer Thickness. Physical Review Letters, 108(17), Article 173601. https://doi.org/10.1103/physrevlett.108.173601

Maximal Refraction and Superluminal Propagation in a Gaseous Nanolayer (2012)
Journal Article
Keaveney, J., Hughes, I., Sargsyan, A., Sarkisyan, D., & Adams, C. (2012). Maximal Refraction and Superluminal Propagation in a Gaseous Nanolayer. Physical Review Letters, 109(23), Article 233001. https://doi.org/10.1103/physrevlett.109.233001

Realization of the Manipulation of Ultracold Atoms with a Reconfigurable Nanomagnetic System of Domain Walls (2012)
Journal Article
West, A., Weatherill, K., Hayward, T., Fry, P., Schrefl, T., Gibbs, M., …Hughes, I. (2012). Realization of the Manipulation of Ultracold Atoms with a Reconfigurable Nanomagnetic System of Domain Walls. Nano Letters, 12(8), https://doi.org/10.1021/nl301491m

Absolute absorption and dispersion of a rubidium vapour in the hyperfine Paschen–Back regime (2012)
Journal Article
Weller, L., Kleinbach, K., Zentile, M., Knappe, S., Adams, C., & Hughes, I. (2012). Absolute absorption and dispersion of a rubidium vapour in the hyperfine Paschen–Back regime. Journal of Physics B: Atomic, Molecular and Optical Physics, 45(21), https://doi.org/10.1088/0953-4075/45/21/215005

Optical isolator using an atomic vapor in the hyperfine Paschen–Back regime (2012)
Journal Article
Weller, L., Kleinbach, K., Zentile, M., Knappe, S., Hughes, I., & Adams, C. (2012). Optical isolator using an atomic vapor in the hyperfine Paschen–Back regime. Optics Letters, 37(16), 3405-3407. https://doi.org/10.1364/ol.37.003405

Three-photon electromagnetically induced transparency using Rydberg states (2012)
Journal Article
Carr, C., Tanasittikosol, M., Sargsyan, A., Sarkisyan, D., Adams, C., & Weatherill, K. (2012). Three-photon electromagnetically induced transparency using Rydberg states. Optics Letters, 37(18), 3858-3860

We demonstrate electromagnetically induced transparency in a four-level cascade system where the upper level is a Rydberg state. The observed spectral features are sub-Doppler and can be enhanced due to the compensation of Doppler shifts with AC Star... Read More about Three-photon electromagnetically induced transparency using Rydberg states.

Optical preparation and measurement of atomic coherence at gigahertz bandwidth (2012)
Journal Article
Siddons, P., Adams, C., & Hughes, I. (2012). Optical preparation and measurement of atomic coherence at gigahertz bandwidth. Journal of Physics B: Atomic, Molecular and Optical Physics, 45(12), https://doi.org/10.1088/0953-4075/45/12/124009

We detail a method for the preparation of atomic coherence in a high-density atomic vapour of 87Rb, utilizing a coherent preparation scheme of off-resonant gigahertz bandwidth pulses. The scheme is found to be faster and more effective than technique... Read More about Optical preparation and measurement of atomic coherence at gigahertz bandwidth.

Measuring the Stokes parameters for light transmitted by a high-density rubidium vapour in large magnetic fields (2012)
Journal Article
Weller, L., Dalton, T., Siddons, P., Adams, C., & Hughes, I. (2012). Measuring the Stokes parameters for light transmitted by a high-density rubidium vapour in large magnetic fields. Journal of Physics B: Atomic, Molecular and Optical Physics, 45(5), Article 055001. https://doi.org/10.1088/0953-4075/45/5/055001

Here we report on measurements of the absolute absorption and dispersion of light in a dense rubidium vapour on the D2 line in the weak-probe regime with an applied magnetic field. A model for the electric susceptibility of the vapour is presented wh... Read More about Measuring the Stokes parameters for light transmitted by a high-density rubidium vapour in large magnetic fields.

Polarization spectroscopy of an excited state transition (2012)
Journal Article
Carr, C., Adams, C., & Weatherill, K. (2012). Polarization spectroscopy of an excited state transition. Optics Letters, 37(1), 118-120. https://doi.org/10.1364/ol.37.000118

We demonstrate polarization spectroscopy of an excited state transition in room-temperature cesium vapor. An anisotropy induced by a circularly polarized pump beam on the D2 transition is observed using a weak probe on the 6P3/2→7S1/2 transition. At... Read More about Polarization spectroscopy of an excited state transition.

Correlated Photon Emission from Multiatom Rydberg Dark States (2012)
Journal Article
Pritchard, J., Adams, C., & Molmer, K. (2012). Correlated Photon Emission from Multiatom Rydberg Dark States. Physical Review Letters, 108(4), Article 043601. https://doi.org/10.1103/physrevlett.108.043601

We consider three-level atoms driven by two resonant light fields in a ladder scheme where the upper level is a highly excited Rydberg state. We show that the dipole-dipole interactions between Rydberg excited atoms prevents the formation of single p... Read More about Correlated Photon Emission from Multiatom Rydberg Dark States.

Subnatural linewidths in two-photon excited-state spectroscopy (2012)
Journal Article
Tanasittikosol, M., Carr, C., Adams, C., & Weatherill, K. (2012). Subnatural linewidths in two-photon excited-state spectroscopy. Physical Review A, 85(3), Article 033830. https://doi.org/10.1103/physreva.85.033830

Cold Rydberg gases and ultra-cold plasmas (2011)
Journal Article
Pohl, T., Adams, C., & Sadephpour, H. (2011). Cold Rydberg gases and ultra-cold plasmas. Journal of Physics B: Atomic, Molecular and Optical Physics, 44(18, SI), Article 180201. https://doi.org/10.1088/0953-4075/44/18/180201

Optical non-linearity in a dynamical Rydberg gas (2011)
Journal Article
Pritchard, J., Gauguet, A., Weatherill, K., & Adams, C. (2011). Optical non-linearity in a dynamical Rydberg gas. Journal of Physics B: Atomic, Molecular and Optical Physics, 44(18), https://doi.org/10.1088/0953-4075/44/18/184019

Quantum interference in interacting three-level Rydberg gases: coherent population trapping and electromagnetically induced transparency (2011)
Journal Article
Sevincli, S., Ates, C., Pohl, T., Schempp, H., Hofmann, C., Guenter, G., …Adams, C. (2011). Quantum interference in interacting three-level Rydberg gases: coherent population trapping and electromagnetically induced transparency. Journal of Physics B: Atomic, Molecular and Optical Physics, 44, https://doi.org/10.1088/0953-4075/44/18/184018

Electrometry near a dielectric surface using Rydberg electromagnetically induced transparency (2011)
Journal Article
Abel, R., Carr, C., Krohn, U., & Adams, C. (2011). Electrometry near a dielectric surface using Rydberg electromagnetically induced transparency. Physical Review A, 84(2), Article 023408. https://doi.org/10.1103/physreva.84.023408

Microwave dressing of Rydberg dark states (2011)
Journal Article
Tanasittikosol, M., Pritchard, J., Maxwell, D., Gauguet, A., Weatherill, K., Potvliege, R., & Adams, C. (2011). Microwave dressing of Rydberg dark states. Journal of Physics B: Atomic, Molecular and Optical Physics, 44(18), Article 184020. https://doi.org/10.1088/0953-4075/44/18/184020

Absolute absorption on the rubidium D1 line including resonant dipole–dipole interactions (2011)
Journal Article
Weller, L., Bettles, R., Siddons, P., Adams, C., & Hughes, I. (2011). Absolute absorption on the rubidium D1 line including resonant dipole–dipole interactions. Journal of Physics B: Atomic, Molecular and Optical Physics, 44(19), Article 195006. https://doi.org/10.1088/0953-4075/44/19/195006

Here we report on measurements of the absolute absorption spectra of dense rubidium vapour on the D1 line in the weak-probe regime for temperatures up to 170 °C and number densities up to 3 × 1014 cm−3. In such vapours, modifications to the homogeneo... Read More about Absolute absorption on the rubidium D1 line including resonant dipole–dipole interactions.