Journal Articles

Mills, PW, Rundle, R, Samson, J, Devitt, SJ, Tilma, T, Dwyer, V, Everitt, M (2019) Quantum invariants and the graph isomorphism problem, Physical Review A, 100(5), 052317, ISSN: 2469-9926. DOI: 10.1103/physreva.100.052317.

Davies, B, Rundle, R, Dwyer, V, Samson, J, Tilma, T, Everitt, M (2019) Visualizing spin degrees of freedom in atoms and molecules, Physical Review A, 100(4), pp.1-9, ISSN: 2469-9926. DOI: 10.1103/physreva.100.042102.

Rundle, RP, Tilma, T, Samson, J, Dwyer, V, Bishop, RF, Everitt, M (2019) General approach to quantum mechanics as a statistical theory, Physical Review A, 99(1), 012115, ISSN: 2469-9926. DOI: 10.1103/physreva.99.012115.

Rundle, R, Mills, PW, Tilma, T, Samson, J, Everitt, M (2017) Simple procedure for phase-space measurement and entanglement validation, Physical Review A, 96, ISSN: 2469-9926. DOI: 10.1103/PhysRevA.96.022117.

Tilma, T, Everitt, MJ, Samson, JH, Munro, WJ, Nemoto, K (2016) Wigner Functions for Arbitrary Quantum Systems, Physical Review Letters, 117(18), 180401, ISSN: 0031-9007. DOI: 10.1103/physrevlett.117.180401.

Duffus, SNA, Bjergstrom, K, Dwyer, V, Samson, J, Spiller, TP, Zagoskin, A, Munro, WJ, Nemoto, K, Everitt, M (2016) Some implications of superconducting quantum interference to the application of master equations in engineering quantum technologies, Physical Review B - Condensed Matter and Materials Physics, 94, ISSN: 0163-1829. DOI: 10.1103/PhysRevB.94.064518.

Sowa, AP, Everitt, M, Samson, J, Saveliev, S, Zagoskin, A, Heidel, S, Zuniga-Anaya, JC (2015) Recursive simulation of quantum annealing, ISSN: 1751-8113. DOI: 10.1088/1751-8113/48/41/415301.

Everitt, M, Samson, J, Saveliev, S, Wilson, RD, Zagoskin, A, Spiller, TP (2014) Tunable refraction in a two-dimensional quantum-state metamaterial, Phys. Rev. A, 90, p.023837, ISSN: 2469-9926. DOI: 10.1103/PhysRevA.90.023837.

Wilson, RD, Everitt, MJ, Samson, JH, Savelev, SE, Zagoskin, AM, Spiller, TP (2013) Transmission through a two dimensional quantum metamaterial, Proceedings of SPIE - The International Society for Optical Engineering, 8771, ISSN: 0277-786X. DOI: 10.1117/12.2018057.

Sica, G, Samson, JH, Alexandrov, AS (2012) Erratum: Pseudogap in high-temperature superconductors from realistic Fr̈ohlich and Coulomb interactions (Europhysics Letters (EPL) (2012) 100 (37005), EPL, 100(5), ISSN: 0295-5075. DOI: 10.1209/0295-5075/100/59901.

Sica, G, Samson, JH, Alexandrov, AS (2012) Pseudogap in high-temperature superconductors from realistic Fröhlich and Coulomb interactions, EPL, 100(3), ISSN: 0295-5075. DOI: 10.1209/0295-5075/100/37005.

Alexandrov, AS, Samson, JH, Sica, G (2012) High-temperature superconductivity from realistic Coulomb and Fröhlich interactions, EPL, 100(1), ISSN: 0295-5075. DOI: 10.1209/0295-5075/100/17011.

Alexandrov, AS, Samson, JH, Sica, G (2012) Superlight small bipolarons from realistic long-range Coulomb and Fröhlich interactions, Physical Review B - Condensed Matter and Materials Physics, 85(10), ISSN: 1098-0121. DOI: 10.1103/PhysRevB.85.104520.

Jackson, S and Samson, JH (2011) Strictly localised triplet dimers on one- and two-dimensional lattices, Journal of Physics: Conference Series, 286(1), pp.1-3, ISSN: 1742-6596. DOI: 10.1088/1742-6596/286/1/012051.

Hardy, TM, Hague, JP, Samson, JH, Alexandrov, A (2009) Superconductivity in a Hubbard-Frohlich model and in cuprates, Physical Review B, 79(21), pp.212501-1/4, ISSN: 1098-0121. DOI: 10.1103/PhysRevB.79.212501.

Hague, JP, Kornilovitch, PE, Samson, JH, Alexandrov, A (2008) Singlet and triplet bipolarons on the triangular lattice, Journal of Physics and Chemistry of Solids, 69(?), pp.3304-3306, ISSN: 0022-3697. DOI: 10.1016/j.jpcs.2008.06.129.

Hague, JP, Kornilovitch, PE, Samson, JH, Alexandrov, AS (2007) Long-range electron-phonon interactions lead to superlight small bipolarons, Journal of Physics: Conference Series, 92(1), ISSN: 1742-6588. DOI: 10.1088/1742-6596/92/1/012118.

Hague, JP, Kornilovitch, PE, Samson, JH, Alexandrov, A (2007) Superlight small bipolarons, Journal of Physics: Condensed Matter, 19(7), pp.225214-1/26, ISSN: 0953-8984. DOI: 10.1088/0953-8984/19/25/255214.

Hague, JP, Kornilovitch, PE, Alexandrov, A, Samson, JH (2007) Unconventional pairing in bipolaronice theories, Physica C, 460-462, pp.1121-1122, ISSN: 0921-4534.

Hague, JP, Kornilovitch, PE, Samson, JH, Alexandrov, A (2007) Superlight Small Bipolarons in the Presence of a Strong Coulomb Repulsion, Physical Review Letters, 98(3), ISSN: 0031-9007. DOI: 10.1103/PhysRevLett.98.037002.

Hague, JP, Kornilovitch, PE, Alexandrov, AS, Samson, J (2007) Erratum: effects of lattice geometry and interaction range on polaron dynamics, DOI: 10.1103/PhysRevB.75.059901.

Kusmartsev, F, Samson, JH, Radosz, A, Ostasiewicz, K, Magnuszewski, P, Damczyk, J, Radosinski, L, Mitus, AC, Pawlik, G (2006) Thermodynamics of entropy-driven phase transformations, Physical Review E, 73(2), ISSN: 1095-3787. DOI: 10.1103/PhysRevE.73.026127.

Radosz, A, Ostasiewicz, K, Magnuszewski, P, Damczyk, J, Radosiński, Ł, Kusmartsev, FV, Samson, JH, Mituś, AC, Pawlik, G (2006) Thermodynamics of entropy-driven phase transformations, Physical Review E, 73(2), 026127, ISSN: 1539-3755. DOI: 10.1103/physreve.73.026127.

Hague, JP, Kornilovitch, PE, Alexandrov, A, Samson, JH (2006) Effects of lattice geometry and interaction range on polaron dynamics, Physical Review B, 73(5), pp.054303-1/14, ISSN: 1098-0121. DOI: 10.1103/PhysRevB.73.054303.

Spencer, PE, Samson, JH, Kornilovitch, PE, Alexandrov, A (2005) Effect of electron-phonon interaction range on lattice polaron dynamics: A continuous-time quantum Monte Carlo, Physical Review B, 71(18), ISSN: 1098-0121. DOI: 10.1103/PhysRevB.71.184310.

Radosz, A, Ostasiewicz, K, Magnuszewski, P, Radosinski, L, Kusmartsev, FV, Samson, JH (2005) Lattice multi-stability in low dimensional structures, Physica status solidi (b), 242(2), pp.303-310.

Radosz, A, Ostasiewicz, K, Magnuszewski, P, Radosinski, L, Kusmartsev, FV, Samson, JH (2005) Electron-phonon coupling in photo-induced phase transitions, Physica Status Solidi (b), 242(2), pp.454-460.

Samson, JH (2003) Phase-space path-integral calculation of the Wigner function, Journal of Physics A: Mathematics and General, 36(42), pp.10637-10650, ISSN: 1361-6447. DOI: 10.1088/0305-4470/36/42/015.

Samson, JH (2000) Time discretization of functional integrals, JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 33(16), pp.3111-3120, ISSN: 0305-4470. DOI: 10.1088/0305-4470/33/16/305.

Samson, JH (2000) Time Discretization of Functional Integrals, Journal of Physics A, 33(16), pp.3111-3120, ISSN: 0305-4470.

Samson, JH (2000) Coherent-State Path-Integral Calculation of the Wigner Function, Journal of Physics A: Math. Gen, 33, pp.5219-5229.

Samson, JH and Evans, GA (1998) Symmetry Reduction of Fourier Kernels, Journal of Computational Physics, 142, pp.109-122, ISSN: 0021-9991.

Samson, JH (1996) Phase separation in the one-dimensional Hubbard model, n/a.

Samson, JH (1996) Spin Density Wave Selection in the One-Dimensional Hubbard Model, Journal of Physics: Condensed Matter, 8(5), pp.569-580, ISSN: 0953-8984.

Samson, JH (1995) Classical effective Hamiltonians, Wigner functions and the sign problem, Physica B: Physics of Condensed Matter, 206-207(C), pp.163-165, ISSN: 0921-4526. DOI: 10.1016/0921-4526(94)00395-C.

Samson, JH (1995) Classical Effective Hamiltonians, Wigner Functions, and the Sign Problem, Physical Review B, 51(1), pp.223-233, ISSN: 0163-1829.

Samson, JH (1995) Auxiliary Fields and the Sign Problem, International Journal of Modern Physics C - Physics and Computers, 6(3), pp.427-465, ISSN: 0129-1831.

SAMSON, JH (1993) QUANTUM MONTE-CARLO COMPUTATION - THE SIGN PROBLEM AS A BERRY PHASE, PHYSICAL REVIEW B, 47(6), pp.3408-3411, ISSN: 0163-1829. DOI: 10.1103/PhysRevB.47.3408.

Samson, JH (1993) Quantum Monte Carlo Computation: The Sign Problem as a Berry Phase, Physical Review B, 47(6), pp.3408-3411, ISSN: 0163-1829.

PERRIN, R, CHARNLEY, T, SAMSON, JH (1991) THE CAMPANOID - AN EQUATION FOR THE CHURCH BELL PROFILE, JOURNAL OF SOUND AND VIBRATION, 151(1), pp.163-167, ISSN: 0022-460X. DOI: 10.1016/0022-460X(91)90660-C.

CHANA, KS, SAMSON, JH, LUCHINI, MU, HEINE, V (1991) MAGNETIC SHORT-RANGE ORDER IN IRON ABOVE TC - STATISTICAL-MECHANICS WITH MANY-ATOM INTERACTIONS, JOURNAL OF PHYSICS-CONDENSED MATTER, 3(33), pp.6455-6471, ISSN: 0953-8984. DOI: 10.1088/0953-8984/3/33/022.

SAMSON, JH (1989) MAGNETIC CORRELATIONS IN PARAMAGNETIC IRON, JOURNAL OF PHYSICS-CONDENSED MATTER, 1(37), pp.6717-6729, ISSN: 0953-8984. DOI: 10.1088/0953-8984/1/37/018.

SAMSON, JH (1988) ENERGY AND ENTROPY IN ITINERANT MAGNETS, JOURNAL DE PHYSIQUE, 49(C-8), pp.75-76, ISSN: 0302-0738. DOI: 10.1051/jphyscol:1988824.

Kakehashi, Y and Samson, JH (1986) Evidence of strong electron correlation effects on thermal expansion in transition metals, Physical Review B, 34(3), pp.1734-1737, ISSN: 0163-1829. DOI: 10.1103/physrevb.34.1734.

Samson, JH (1986) Quantum effects in itinerant magnetism, Journal of Magnetism and Magnetic Materials, 54-57, pp.983-984, ISSN: 0304-8853. DOI: 10.1016/0304-8853(86)90344-6.

Kakehashi, Y and Samson, JH (1986) Variational approach to finite-temperature magnetism. II. Antiferromagnetism, Physical Review B, 33(1), pp.298-304, ISSN: 0163-1829. DOI: 10.1103/physrevb.33.298.

Samson, JH (1984) Inverse-degeneracy expansions for the Hubbard model, Physical Review B, 30(3), pp.1437-1447, ISSN: 0163-1829. DOI: 10.1103/physrevb.30.1437.

Holden, AJ, Heine, V, Samson, JH (1984) Magnetic contributions to thermal expansion of transition metals: implications for local moments above T_c, Journal of Physics F: Metal Physics, 14(4), pp.1005-1020, ISSN: 0305-4608. DOI: 10.1088/0305-4608/14/4/022.

Samson, JH (1984) Breakdown of the static approximation in itinerant-electron magnetism, Journal de Physique, 45(10), pp.1675-1680, ISSN: 0302-0738. DOI: 10.1051/jphys:0198400450100167500.

Samson, JH (1983) Magnitude of local magnetization in transition metals, Physical Review B, 28(11), pp.6387-6393, ISSN: 0163-1829. DOI: 10.1103/physrevb.28.6387.

Heine, V and Samson, JH (1983) Magnetic, chemical and structural ordering in transition metals, Journal of Physics F: Metal Physics, 13(10), pp.2155-2168, ISSN: 0305-4608. DOI: 10.1088/0305-4608/13/10/025.

Samson, JH (1983) Theory of some physical properties and competing processes in tight-binding bands. II. Finite temperature properties and disordered alloys, Journal of Physics F: Metal Physics, 13(6), pp.1167-1172, ISSN: 0305-4608. DOI: 10.1088/0305-4608/13/6/014.

Heine, V, Samson, JH, Nex, CMM (1981) Theory of local magnetic moments in transition metals, Journal of Physics F: Metal Physics, 11(12), pp.2645-2662, ISSN: 0305-4608. DOI: 10.1088/0305-4608/11/12/015.

Heine, V and Samson, JH (1980) Theory of some physical properties and competing processes in tight-binding bands, Journal of Physics F: Metal Physics, 10(12), pp.2609-2616, ISSN: 0305-4608. DOI: 10.1088/0305-4608/10/12/006.

Cullimore, M, Everitt, MJ, Ormerod, MA, Samson, JH, Wilson, RD, Zagoskin, AM (Accepted for publication) The relationship between minimum gap and success probability in adiabatic quantum computing, J. Phys. A: Math. Theor, 45, p.505305, DOI: 10.1088/1751-8113/45/50/505305.

Conferences

Hague, JP, Kornilovitch, PE, Samson, JH, Alexandrov, A (2007) Long-range electron-phonon interactions lead to superlight small bipolarons. In Jean Yves Duquesne, (ed) PHONONS 2007, Journal of Physics: Conference Series, Paris, pp.012118-1/4, DOI: 10.1088/1742-6596/92/1/012118.

Hague, JP, Kornilovitch, PE, Samson, JH, Alexandrov, AS (2007) Long-range electron-phonon interactions lead to superlight small bipolarons. In Perrin, B, Bonello, B, Devos, A, Duquesne, JY, Rossignol, C (ed) 12th International Conference on Phonon Scattering in Condensed Matter (PHONONS 2004), 12TH INTERNATIONAL CONFERENCE ON PHONON SCATTERING IN CONDENSED MATTER (PHONONS 2007), Paris, FRANCE. DOI: 10.1088/1742-6596/92/1/012118.

Samson, JH (1999) Exact Classical Effective Potentials. In Casalbuoni, R, Giachetti, R, Tognetti, V, Vaia, R, Verrucchi, eds, P (ed) Proceedings of the 6th International Conference on Path Integrals from peV to TeV, Singapore, pp.550-553.

Samson, JH (1997) Phase separation in Hubbard model. In European Conference on Physics of Magnetism 96, ACTA PHYSICA POLONICA A, POZNAN, POLAND, pp.363-366, DOI: 10.12693/APhysPolA.92.363.

Samson, JH (1995) Functional Integration in Itinerant Magnets: What Does it Mean?. In International Conference on Magnetism, Journal of Magnetism and Magnetic Materials, Warsaw, pp.203-204.

Samson, JH (1995) Spin Density Waves in the 1D Hubbard Model. In International Conference on Magnetism, Journal of Magnetism and Magnetic Materials, Warsaw, pp.205-206.

Samson, JH (1993) Functional Integration and Quantum Monte Carlo in Itinerant Magnets: The Berry Phase and the Sign Problem. In International Conference on the Physics of Transition Metals, International Journal of Modern Physics, Darmstadt, Germany, pp.593-596.

Chana, KS, Samson, JH, Luchini, MU, Heine, V (1992) Magnetic Short-range Order in Iron above T_{c}? Statistical Mechanics with Many-atom Interactions. In Journal of Magnetism and Magnetic Materials, Edinburgh, pp.743-744.

Chapters

Samson, JH (1993) Aspects of the Sign Problem. In Suzuki, M (ed) Quantum Monte Carlo Methods in Condensed Matter Physics, World Scientific Publishing Co. Pte.Ltd, pp.234-250.

Media

Rundle, R, Mills, P, Tilma, T, Samson, J, Everitt, M (2017) Supporting animation 1 of 3 for Simple procedure for phase-space measurement and entanglement validation.

Rundle, R, Mills, P, Tilma, T, Samson, J, Everitt, M (2017) Supporting animation 2 of 3 for Simple procedure for phase-space measurement and entanglement validation.

Rundle, R, Mills, P, Tilma, T, Samson, J, Everitt, M (2017) Supporting animation 3 of 3 for Simple procedure for phase-space measurement and entanglement validation.

Other

Mills, PW, Rundle, RP, Samson, JH, Devitt, SJ, Tilma, T, Dwyer, VM, Everitt, MJ (Accepted for publication) On quantum invariants and the graph isomorphism problem, Three new graph invariants are introduced which may be measured from a quantum graph state and form examples of a framework under which other graph invariants can be constructed. Each invariant is based on distinguishing a different number of qubits. This is done by applying alternate measurements to the qubits to be distinguished. The performance of these invariants is evaluated and compared to classical invariants. We verify that the invariants can distinguish all non-isomorphic graphs with 9 or fewer nodes. The invariants have also been applied to `classically hard' strongly regular graphs, successfully distinguishing all strongly regular graphs of up to 29 nodes, and preliminarily to weighted graphs. We have found that although it is possible to prepare states with a polynomial number of operations, the average number of preparations required to distinguish non-isomorphic graph states scales exponentially with the number of nodes. We have so far been unable to find operators which reliably compare graphs and reduce the required number of preparations to feasible levels. DOI: 10.1103/PhysRevA.100.052317.