Dr Rose Ahlefeldt
Areas of expertise
- Quantum Information, Computation And Communication 020603
- Electronic And Magnetic Properties Of Condensed Matter; Superconductivity 020404
Research interests
In my research I'm working to develop quantum information devices using rare earth ions in crystals. I study the optical and spin properties of the rare earth ions with high-resolution optical spectroscopy, with a focus on high concentration crystals and on interactions between the rare earth ions. My goal is to understand how the material properties affect the performance of devices such as quantum memories, and to use this information to identify more suitable materials.
Publications
- Ahlefeldt, R, Pearce, M, Hush, M et al. 2020, 'Quantum processing with ensembles of rare-earth ions in a stoichiometric crystal', Physical Review A, vol. 101, pp. 1-11.
- Fernandez-Gonzalvo, X, King, G, Horvath, S et al 2019, 'Toward quantum microwave to optical conversion using rare earth ion containing crystals', 2019 Conference on Lasers and Electro-Optics, CLEO 2019, Optical Society of American (OSA), USA, pp. 1-2.
- Louchet-Chauvet, A, Ahlefeldt, R & Chaneliere, T 2019, 'Piezospectroscopic measurement of high-frequency vibrations in a pulse-tube cryostat', Review of Scientific Instruments, vol. 90, no. 3, pp. -.
- Zhong, M, Ahlefeldt, R & Sellars, M 2019, 'Quantum information processing using frozen core Y 3+ spins in Eu 3+ :Y 2 SiO 5', New Journal of Physics, vol. 21, no. 3, pp. -.
- Everts, J, Berrington, M, Ahlefeldt, R et al 2019, 'Microwave to optical photon conversion via fully concentrated rare-earth-ion crystals', Physical Review A, vol. 99, no. 6, pp. 1-9.
- Rancic, M, Hedges, M, Ahlefeldt, R et al 2018, 'Coherence time of over a second in a telecom-compatible quantum memory storage material', Nature Physics, vol. 14, no. 1, pp. 50-54pp.
- Manson, N, Hedges, M, Barson, M et al 2018, 'NV--N+ pair centre in 1b diamond', New Journal of Physics, vol. 20, pp. 1-29pp.
- Sellars, M, Ahlefeldt, R & Hush, M 2017, 'Stoichiometric rare-earth crystals for applications in quantum information', QELS_Fundamental Science, CLEO_QELS 2017, Optical Society of American (OSA), Online, pp. 2pp.
- Sellars, M, Ahlefeldt, R & Hush, M 2017, 'Stoichiometric rare-earth crystals for applications in quantum information', QELS_Fundamental Science, CLEO_QELS 2017, Optical Society of American (OSA), Online, pp. -.
- Hush, M, Bentley, C, Ahlefeldt, R et al. 2016, 'Quantum state transfer through time reversal of an optical channel', Physical Review A - Atomic, Molecular, and Optical Physics, vol. 94, no. 6, pp. 1-16.
- Bartholomew, J, Ahlefeldt, R & Sellars, M 2016, 'Engineering closed optical transitions in rare-earth ion crystals', Physical Review B: Condensed Matter and Materials, vol. 93, no. 1, pp. -.
- Ahlefeldt, R, Hush, M & Sellars, M 2016, 'Ultranarrow Optical Inhomogeneous Linewidth in a Stoichiometric Rare-Earth Crystal', Physical Review Letters, vol. 117, no. 25, pp. 1-6.
- Ahlefeldt, R, Bentley, C, James, M et al 2016, 'Quantum state transfer through time reversal of an optical channel', Physical Review A: Atomic, Molecular and Optical Physics, vol. 94, no. 6, p. 13.
- Ahlefeldt, R, Hush, M & Sellars, M 2016, 'Ultranarrow Optical Inhomogeneous Linewidth in a Stoichiometric Rare-Earth Crystal', Physical Review Letters, vol. 117, no. 25, pp. 1-6.
- Dajczgewand, J, Ahlefeldt, R, Böttger, T et al 2015, 'Optical memory bandwidth and multiplexing capacity in the erbium telecommunication window', New Journal of Physics, vol. 17, no. -, pp. 1-12.
- Ahlefeldt, R, Pascual-Winter, M, Louchet-Chauvet, A et al 2015, 'Optical measurement of heteronuclear cross-relaxation interactions in Tm:YAG', Physical Review B: Condensed Matter and Materials, vol. 92, no. 9, pp. 1-12.
- Zhong, M, Hedges, M, Ahlefeldt, R et al 2015, 'Optically addressable nuclear spins in a solid with a six-hour coherence time', Nature, vol. 517, no. 7533, pp. 177-U121.
- Ahlefeldt, R, Zhong, M, Bartholomew, J et al 2013, 'Minimizing Zeeman sensitivity on optical and hyperfine transitions in EuCl3 . 6H2O to extend coherence times', Journal of Luminescence, vol. 143, pp. 193-200.
- Ahlefeldt, R, Manson, N & Sellars, M 2013, 'Optical lifetime and linewidth studies of the F-7(0)-> D-5(0) transition in EuCl3 center dot 6H(2)O: A potential material for quantum memory applications', Journal of Luminescence, vol. 133, pp. 152-156.
- Ahlefeldt, R, Manson, N, Sellars, M et al 2013, 'Precision measurement of electronic ion-ion interactions between neighboring Eu3+ optical centers', Physical Review Letters, vol. 111, no. 24, pp. 1-5.
- Ahlefeldt, R, Hutchinson, D, Manson, N et al 2013, 'Method for assigning satellite lines to crystallographic sites in rare-earth crystals', Physical Review B: Condensed Matter and Materials, vol. 88, no. 18, pp. 1-6.
- Ahlefeldt, R, Hutchison, W & Sellars, M 2011, 'Characterisation of EuCl 3.6H 2O for multi-qubit quantum processing', 2011 International Quantum Electronics Conference, IQEC 2011 and Conference on Lasers and Electro-Optics, CLEO Pacific Rim 2011, IEEE, Australia, pp. 1791-1793.
- Faul, U, Fitzgerald, J, Farla, R et al. 2011, 'Dislocation creep of fine-grained olivine', Journal of Geophysical Research, vol. 116, no. 1, pp. B01203-12.
- Ahlefeldt, R, Hutchison, W & Sellars, M 2010, 'Eu3+ superhyperfine structure due to magnetic dipole-dipole interactions with Nd3+ in Nd3+ : EuCl3 · 6H2O', Journal of Luminescence, vol. 130, no. 9, pp. 1594 - 1597.
- Ahlefeldt, R, Smith, A & Sellars, M 2009, 'Ligand isotope structure of the optical 7F0- 5D0 transition in EuCl3.6H2O', Physical Review B: Condensed Matter and Materials, vol. 80, no. 20, pp. 205106-1 - 205106-5.
- Hinde, D, Ahlefeldt, R, Thomas PhD, R et al. 2007, 'Probing the tail of the nuclear potential between identical nuclei with quasi-elastic Mott scattering', Physical Review C: Nuclear Physics, vol. 76, no. 014617, p. 9.
Projects and Grants
Grants information is drawn from ARIES. To add or update Projects or Grants information please contact your College Research Office.
- Development of new materials for high data storage capacity quantum devices (Primary Investigator)
