# School of Physics and Astronomy

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## Dr Almut Beige

Theoretical Physics Group

### Contact details

Room: 9.72

Tel: +44 (0)113 3433899

Email: a.beige @ leeds.ac.uk

### Keywords

Quantum Information Processing

Quantum Optics

## Research interests

The main aim of my research is to increase our understanding of quantum physics, especially the quantum physics of quantum optical systems with spontaneous photon emission. This is motivated, for example, by the potential applications of these systems in Quantum Information Processing and Quantum Metrology. Over recent years, experiments which employ fast technical advances have already answered many questions concerning the foundations of quantum physics but even more questions have been raised in the process. I expect that, within the next decade, experimental research will progress even deeper into the quantum realm of physical systems, thereby uncovering many interesting new effects.

### Useful links

## Publications

**Barnett SM, Beige A, Ekert A, Garraway BM, Keitel CH, Kendon V, Lein M, Milburn GJ, Moya-Cessa HM, Murao M, Pachos JK, Palma GM, Paspalakis E, Phoenix SJD, Piraux B, Plenio MB, Sanders BC, Twamley J, Vidiella-Barranco A, Kim MS** Journeys from quantum optics to quantum technology *Progress in Quantum Electronics* **54** 19-45, 2017

DOI:10.1016/j.pquantelec.2017.07.002

View abstract

**Stokes A, Deb P, Beige A** Using thermodynamics to identify quantum subsystems *Journal of Modern Optics* 1-13, 2017

DOI:10.1080/09500340.2017.1295108

View abstract

**Clark LA, Stokes A, Beige A** Quantum-enhanced metrology with the single-mode coherent states of an optical cavity inside a quantum feedback loop *Physical Review A* **94** -, 2016

DOI:10.1103/PhysRevA.94.023840

View abstract

**Beige A** Quantum optics: A new take on the slit experiment *Nature Photonics* **10** 290-291, 2016

DOI:10.1038/nphoton.2016.71

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**Bennett R, Barlow TM, Beige A** A physically motivated quantization of the electromagnetic field *European Journal of Physics* **37** -, 2016

DOI:10.1088/0143-0807/37/1/014001

View abstract

**Beige A, Kim O** A cavity-mediated collective quantum effect in sonoluminescing bubbles, 2015

DOI:10.1088/1742-6596/656/1/012177

View abstract

**Stokes A, Beige A** An alternative electric-field spectrum for laser-driven atomic systems *European Physical Journal D* **69** -, 2015

DOI:10.1140/epjd/e2015-60105-9

View abstract

**Barlow TM, Bennett R, Beige A** A master equation for a two-sided optical cavity. *Journal of Modern Optics* **62** S11-S20, 2015

DOI:10.1080/09500340.2014.992992

View abstract

**Bruschi DE, Barlow TM, Razavi M, Beige A** Repeat-until-success quantum repeaters *Physical Review A - Atomic, Molecular, and Optical Physics* **90** -, 2014

DOI:10.1103/PhysRevA.90.032306

View abstract

**Beige A, Pachos JK** Announcing the JMO series on quantum memories. *Journal of Modern Optics* **60** 1517-1518, 2013

DOI:10.1080/09500340.2013.833391

**Kim O, Beige A** Mollow triplet for cavity-mediated laser cooling. *Physical Review A* **88** -, 2013

DOI:10.1103/PhysRevA.88.053417

View abstract

**Beige A, Barlow TM, Kyoseva ES, Kwek LC** Coherent cavity networks with complete connectivity *2013 Conference on Lasers and Electro-Optics, CLEO 2013* -, 2013

View abstract

**Blake T, Kurcz A, Beige A** Rate-equation approach to cavity-mediated laser cooling *Physical Review A* **86** -, 2012

DOI:10.1103/PhysRevA.86.013419

View abstract

**Stokes A, Kurcz A, Spiller TP, Beige A** Extending the validity range of quantum optical master equations *Physical Review A - Atomic, Molecular, and Optical Physics* **85** -, 2012

DOI:10.1103/PhysRevA.85.053805

View abstract

**Kyoseva E, Beige A, Kwek LC** Coherent cavity networks with complete connectivity *New Journal of Physics* **14** -, 2012

DOI:10.1088/1367-2630/14/2/023023

View abstract

**Kyoseva E, Beige A, Kwek LC** Coherent cavity networks with complete connectivity *NEW JOURNAL OF PHYSICS* **14** -, 2012

DOI:10.1088/1367-2630/14/2/023023

**O'Neill B, Barlow TM, Safranek D, Beige A** Hidden Quantum Markov Models with One Qubit, 2012

DOI:10.1063/1.4756222

**Beige A, Kurcz A, Stokes A** Composite quantum systems and environment-induced heating *AIP Conference Proceedings* **1389** 969-972, 2011

DOI:10.1063/1.3637771

View abstract

**Blake T, Kurcz A, Saleem NS, Beige A** Laser cooling of a trapped particle with increased Rabi frequencies *Physical Review A - Atomic, Molecular, and Optical Physics* **84** -, 2011

DOI:10.1103/PhysRevA.84.053416

View abstract

**Blake T, Kurcz A, Saleem NS, Beige A** Laser cooling of a trapped particle with increased Rabi frequencies *PHYSICAL REVIEW A* **84** -, 2011

DOI:10.1103/PhysRevA.84.053416

**Beige A, Capolupo A, Kurcz A, Del Giudice E, Vitiello G** Emission of photons through cavity mirrors in the absence of external driving *Journal of Physics: Conference Series* **306** -, 2011

DOI:10.1088/1742-6596/306/1/012072

View abstract

**Busch J, De S, Ivanov SS, Torosov BT, Spiller TP, Beige A** Cooling atom-cavity systems into entangled states *PHYS REV A* **84** -, 2011

DOI:10.1103/PhysRevA.84.022316

**Beige A, Freegarde T, Renzoni F** New cooling mechanisms for atoms and molecules *J MOD OPTIC* **58** 1297-1299, 2011

DOI:10.1080/09500340.2011.615472

**Beige A, Kurcz A, Stokes A** Composite Quantum Systems and Environment-Induced Heating, 2011

DOI:10.1063/1.3637771

**Busch J, Beige A** Protecting subspaces by acting on the outside *Journal of Physics: Conference Series* **254** -, 2010

DOI:10.1088/1742-6596/254/1/012009

View abstract

**Busch J, Beige A** Generating single-mode behavior in fiber-coupled optical cavities *PHYS REV A* **82** -, 2010

DOI:10.1103/PhysRevA.82.053824

**Kurcz A, Capolupo A, Beige A, Del Giudice E, Vitiello G** Rotating wave approximation and entropy *PHYS LETT A* **374** 3726-3732, 2010

DOI:10.1016/j.physleta.2010.07.032

**Kurcz A, Capolupo A, Beige A, Del Giudice E, Vitiello G** Energy concentration in composite quantum systems *PHYS REV A* **81** -, 2010

DOI:10.1103/PhysRevA.81.063821

**Palmer RN, Beige A** Enhancing laser sideband cooling in one-dimensional optical lattices via the dipole interaction *PHYS REV A* **81** -, 2010

DOI:10.1103/PhysRevA.81.053411

**Busch J, Beige A** Protecting subspaces by acting on the outside, 2010

DOI:10.1088/1742-6596/254/1/012009

**Vacanti G, Beige A** Cooling atoms into entangled states *NEW J PHYS* **11** -, 2009

DOI:10.1088/1367-2630/11/8/083008

**Khan MM, Murphy M, Beige A** High error-rate quantum key distribution for long-distance communication *NEW J PHYS* **11** -, 2009

DOI:10.1088/1367-2630/11/6/063043

**Kurcz A, Capolupo A, Beige A** Sonoluminescence and quantum optical heating *NEW J PHYS* **11** -, 2009

DOI:10.1088/1367-2630/11/5/053001

**Kurcz A, Capolupo A, Beige A** Quantum Optical Heating in Sonoluminescence Experiments, 2009

**Busch J, Kyoseva ES, Trupke M, Beige A** Entangling distant quantum dots using classical interference *PHYS REV A* **78** -, 2008

DOI:10.1103/PhysRevA.78.040301

**Metz J, Schon C, Beige A** Atomic cluster state build-up with macroscopic heralding *PHYS REV A* **76** -, 2007

DOI:10.1103/PhysRevA.76.052307

**Metz J, Beige A** Macroscopic quantum jumps and entangled-state preparation *PHYS REV A* **76** -, 2007

DOI:10.1103/PhysRevA.76.022331

**Beige A, Lim YL, Kwek LC** A repeat-until-success quantum computing scheme *NEW J PHYS* **9** -, 2007

DOI:10.1088/1367-2630/9/6/197

**Beige A, Lim YL, Schon C** Multi-photon entanglement from distant single photon sources on demand *J MOD OPTIC* **54** 397-407, 2007

DOI:10.1080/09500340600742254

**Trupke M, Metz J, Beige A, Hinds EA** Towards quantum computing with single atoms and optical cavities on atom chips *J MOD OPTIC* **54** 1639-1655, 2007

DOI:10.1080/09500340600934240

**Joo J, Lim YL, Beige A, Knight PL** Single-qubit rotations in two-dimensional optical lattices with multiqubit addressing *PHYS REV A* **74** -, 2006

DOI:10.1103/PhysRevA.74.042344

**Metz J, Trupke M, Beige A** Robust entanglement through macroscopic quantum jumps. *Phys Rev Lett* **97** 040503-, 2006

DOI:10.1103/PhysRevLett.97.040503

View abstract

**Lim YL, Barrett SD, Beige A, Kok P, Kwek LC** Repeat-until-success quantum computing using stationary and flying qubits *PHYS REV A* **73** -, 2006

DOI:10.1103/PhysRevA.73.012304

**Pachos JK, Beige A** Decoherence-free dynamical and geometrical entangling phase gates (vol 69, pg 033817, 2004) *PHYS REV A* **72** -, 2005

DOI:10.1103/PhysRevA.72.049906

**Pachos JK, Beige A** Erratum: Decoherence-free dynamical and geometrical entangling phase gates (Physical Reveiw A (2004) 69 (033817)) *Physical Review A - Atomic, Molecular, and Optical Physics* **72** -, 2005

DOI:10.1103/PhysRevA.72.049906

**Lim YL, Beige A, Kwek LC** Repeat-until-success linear optics distributed quantum computing. *Phys Rev Lett* **95** 030505-, 2005

DOI:10.1103/PhysRevLett.95.030505

View abstract

**Lim YL, Beige A** Generalized Hong-Ou-Mandel experiments with bosons and fermions *NEW J PHYS* **7** -, 2005

DOI:10.1088/1367-2630/7/1/155

**Beige A, Knight PL, Vitiello G** Cooling many particles to very low temperatures, 2005

View abstract

**Lim YL, Beige A** Multiphoton entanglement through a Bell-multiport beam splitter *PHYS REV A* **71** -, 2005

DOI:10.1103/PhysRevA.71.062311

**Lim YL, Beige A** An efficient quantum filter for multiphoton states *J MOD OPTIC* **52** 1073-1080, 2005

DOI:10.1080/09500340512331323493

**Beige A, Knight PL, Vitiello G** Cooling many particles at once *NEW J PHYS* **7** -, 2005

DOI:10.1088/1367-2630/7/1/096

**Lim YL, Beige A** Photon polarization entanglement from distant dipole sources *J PHYS A-MATH GEN* **38** L7-L13, 2005

**Beige A, Cable H, Marr C, Knight PL** Speeding up gate operations through dissipation *LASER PHYS* **15** 162-169, 2005

**Pachos JK, Beige A** Decoherence-free dynamical and geometrical entangling phase gates *PHYS REV A* **69** -, 2004

DOI:10.1103/PhysRevA.69.033817

**Lim YL, Beige A** Push button generation of multiphoton entanglement, 2004

DOI:10.1117/12.540981

**Beige A** Ion-trap quantum computing in the presence of cooling *PHYS REV A* **69** -, 2004

DOI:10.1103/PhysRevA.69.012303

**Marr C, Beige A, Rempe G** Entangled-state preparation via dissipation-assisted adiabatic passages *Physical Review A* **68** pp.033817-, 2003

DOI:10.1103/PhysRevA.68.033817

**Beige A** Dissipation-assisted quantum gates with cold trapped ions *PHYS REV A* **67** -, 2003

DOI:10.1103/PhysRevA.67.020301

**Beige A, Cable H, Knight PL** Dissipation-assisted quantum computation in atom-cavity systems, 2003

**Beige A** Quantum computing using dissipation, 2003

**Schulz O, Beige A, Englert BG, Kurtsiefer C, Weinfurter H** Experimental demonstration of direct secure communication with 2-qubit states, 2003

DOI:10.1109/EQEC.2003.1314281

View abstract

**Beige A, Pachos J, Walther H** Spontaneous emission of an atom in front of a mirror *PHYS REV A* **66** -, 2002

DOI:10.1103/PhysRevA.66.063801

**Beige A, Englert BG, Kurtsiefer C, Weinfurter H** Secure communication with single-photon two-qubit states *J PHYS A-MATH GEN* **35** L407-L413, 2002

**Beige A, Englert BG, Kurtsiefer C, Weinfurter H** Secure communication with a publicly known key (vol 101, pg 357, 2002) *ACTA PHYS POL A* **101** 901-901, 2002

**Beige A, Englert BG, Kurtsiefer C, Weinfurter H** Secure communication with a publicly known key *ACTA PHYSICA POLONICA A* **101** 357-368, 2002

**Tregenna B, Beige A, Knight PL** Quantum computing in a macroscopic dark period *PHYS REV A* **65** -, 2002

DOI:10.1103/PhysRevA.65.032305

**Tregenna B, Beige A, Knight PL** Quantum computing in a macroscopic dark period *Physical Review A - Atomic, Molecular, and Optical Physics* **65** -, 2002

View abstract

**Beige A, Englert B-G, Kurtsiefer C, Weinfurter H** Communicating with qubit pairs In *Mathematics of Quantum Computation* , 2002

**Beige A, Schon C, Pachos J** Interference of spontaneously emitted photons *FORTSCHR PHYS* **50** 594-598, 2002

**Beige A, Munro WJ, Knight PL** Bell's inequality test with entangled atoms (vol A 62, art. no. 052102, 2000) *PHYS REV A* **6404** -, 2001

**Addicks SU, Beige A, Dakna M, Hegerfeldt GC** Double jumps and transition rates for two dipole-interacting atoms *EUR PHYS J D* **15** 393-404, 2001

**Schon C, Beige A** Analysis of a two-atom double-slit experiment based on environment-induced measurements *PHYS REV A* **64** art. no.-023806, 2001

**Angelakis DG, Beige A, Knight PL, Munro WJ, Tregenna B** Verifying atom entanglement schemes by testing Bell's inequality, 2001

**Beige A, Munro WJ, Knight PL** Erratum: Bell's inequality test with entangled atoms (Physical Review A (2000) 62 (052102)) *Physical Review A. Atomic, Molecular, and Optical Physics* **64** 499011-, 2001

**Beige A, Braun D, Knight PL** Driving atoms into decoherence-free states *Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series* 164-, 2000

View abstract

**Beige A, Munro WJ, Knight PL** Bell's inequality test with entangled atoms *PHYS REV A* **62** -, 2000

**Beige A, Bose S, Braun D, Huelga SF, Knight PL, Plenio MB, Vedral V** Entangling atoms and ions in dissipative environments, 2000

**Beige A, Braun D, Knight PL** Driving atoms into decoherence-free states *NEW J PHYS* **2** 221-2215, 2000

**Beige A, Braun D, Knight PL** Driving atoms into decoherence-free states *New Journal of Physics* **2** -, 2000

View abstract

**Beige A, Braun D, Tregenna B, Knight PL** Quantum computing using dissipation to remain in a decoherence-free subspace *PHYS REV LETT* **85** 1762-1765, 2000

**Beige A, Huelga SF, Knight PL, Plenio MB, Thompson RC** Coherent manipulation of two-dipole-dipole interacting ions *J MOD OPTIC* **47** 401-414, 2000

**Beige A, Huelga SF, Knight PL, Plenio MB, Thompson RC** Coherent manipulation of two dipole—dipole interacting ions *Journal of Modern Optics* **47-2** 401-414, 2000

DOI:10.1080/09500340008244051

View abstract

**Beige A, Hegerfeldt GC** Cooperative effects in the light and dark periods of two dipole-interacting atoms *PHYS REV A* **59** 2385-2391, 1999

**Plenio MB, Huelga SF, Beige A, Knight PL** Cavity-loss-induced generation of entangled atoms *PHYS REV A* **59** 2468-2475, 1999

**Beige A, Hegerfeldt GC** Transition from antibunching to bunching for two dipole-interacting atoms *PHYS REV A* **58** 4133-4139, 1998

**Beige A, Hegerfeldt GC, Sondermann DG** Atomic quantum Zeno effect for ensembles and single systems *FOUND PHYS* **27** 1671-1688, 1997

**Beige A, Hegerfeldt GC** Quantum Zeno effect and light-dark periods for a single atom *J PHYS A-MATH GEN* **30** 1323-1334, 1997

**Beige A, Hegerfeldt GC** State measurements with short laser pulses and lower-efficiency photon detectors *J MOD OPTIC* **44** 345-357, 1997

**Beige A, Hegerfeldt GC, Sondermann DG** Laser pulses as measurements: Application to the quantum Zeno effect *QUANTUM SEMICL OPT* **8** 999-1015, 1996

**Beige A, Hegerfeldt GC** Projection postulate and atomic quantum Zeno effect *PHYS REV A* **53** 53-65, 1996

**Blake T, Kurcz A, Beige A** Comparing cavity and ordinary laser cooling within the Lamb-Dicke regime *J. Mod. Opt.* **58** 1317-,

DOI:10.1080/09500340.2010.543957

View abstract

**Beige A, Capolupo A, Kurcz A, Giudice ED, Vitiello G** Concentrating Energy by Measurement *AIP Conf. Proc.* **1446** 353-,

DOI:10.1063/1.4728005

View abstract

**Beige A, Capolupo A, Kurcz A, Giudice ED, Vitiello G** Emission of photons through cavity mirrors in the absence of external
driving *J.Phys.Conf.Ser.* **306** 012072-,

DOI:10.1088/1742-6596/306/1/012072

View abstract

**Blake T, Kurcz A, Saleem NS, Beige A** Laser cooling of a trapped particle with increased Rabi frequencies *Phys. Rev. A* **84** 053416-,

DOI:10.1103/PhysRevA.84.053416

View abstract

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