Quantum Computing (QC), Department of Physics, Stockholm University

Stockholms Universitet hem

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Stockholms Universitet hem

Recent Publications

Quantum solution to a three player Kolkata restaurant problem using entangled qutrits Puya Sharif and Hoshang Heydari arXiv:1111.1962
A Representation of extra-special 2-group, entanglement, and Berry phase of two qubits in Yang-Baxter system H.C. Sezer, Duy Hoang, and Hoshang Heydari Accepted for publications in the journal of Quantum Information Processing
Geometrically controlled evolution of four-qubit states Duy Hoang and Hoshang Heydari AIP Conf. Proc., 1327, 329-333, 2011.
Quantum entanglement properties of geometrical and topological quantum gates H.C. Sezer, Duy Hoang, and Hoshang Heydari AIP Conf. Proc., 1327, 472-476, 2011.
Strategies and payoffs in quantum minority games Puya Sharif and Hoshang Heydari AIP Conf. Proc., 1327, 477-481, 2011.
Phase Entanglers for Multi-Qubit States Hoshang Heydari J. Comput. Theor. Nanosci. 7, 1754-1758 (2010)
Quantum entangled state, resolution of conifold singularity, and toric variety Hoshang Heydari arXiv:1007.3822v1
Noncommutative geometrical structures of entangled quantum states Hoshang Heydari IJTP, 2011, Volume 50, Number 5, Pages 1486-1492.
Multipartite quantum systems and symplectic toric manifolds Hoshang Heydari Quantum Information Processing, 2011, Volume 10, Number 2, Pages 257-269.
A class of quantum gate entangler Hoshang Heydari accepted for publication in Physica Scripta for the CEWQO2009 proceedings
A toric varieties approach to geometrical structure of multipartite states Hoshang Heydari, arXiv:1001.3245v1

Publications 2009
Quantum relative phase, m-tangle, and multi-local Lorentz-group invariant, Quantum Information Hoshang Heydari Journal Quantum Information Processing, Springer Netherlands, 1573-1332 (Online).
Selective Phase Rotation Quantum Gate Entangler Hoshang Heydari Open Systems And Information Dynamics, Vol. 16 , No. 4 (2009) pp. 407-412.
Generalized controlled phase quantum gates entanglers Hoshang Heydari International Journal of Quantum Information (IJQI), Vol. 7, No. 6 (2009) .
Combinatorial and Geometrical Structures of Multipartite Quantum Systems Hoshang Heydari Invited book chapter: Mathematical Physics Research Developments, Morris B. Levy Editor, Nova publisher , (2009) pp. 589-604.
Different classes of quantum gate entangler for general multipartite quantum states Hoshang Heydari International Journal of Quantum Information (IJQI), Vol. 7, No. 1 (2009) 279--285.

Publications 2008

Multilinear mapping and structure of multipartite system " Hoshang Heydari International Journal of Quantum Information (IJQI), Vol. 6, No. 6 (2008) 1149-1154
Entanglement witnesses and concurrence for multi-qubit states Hoshang Heydari International Journal of Quantum Information (IJQI), Vol. 6, No. 6 (2008) 1149-1154.
Quantum gate entangler for general multipartite systems Hoshang Heydari Open Systems & Information Dynamics, Vol. 15, No. 3 (2008) 213-222.
Geometrical structure of entangled states and secant variety Hoshang Heydari Quantum Information Processing 7(1) (2008) 43-50 .

Publications 2007

Topological quantum gate entangler for a multi-qubit state Hoshang Heydari J. Phys. A: Math. Theor. 40 (2007) 9877 - 9882.
A class of entanglement monotones for general pure multipartite states based on Plucker coordinates Hoshang Heydari International Journal of Theoretical Physics, Vol. 46, No. 11 (2007) 2801-2807.

Publications 2006

Concurrence for general multipartite states Hoshang Heydari J. Phys. A: Math. Gen. 39 (2006) 15225-15229.
Quantum correlation and Grothendieck's constant Hoshang Heydari J. Phys. A: Math. Gen. 39 (2006) 11869-11875.
Schwarz inequality and concurrence Hoshang Heydari and Gunnar Björk Quantum Information and Computation 6 (2006) 455-460.
The geometry and topology of entanglement: Conifold, Segre variety, and Hopf fibration Hoshang Heydari Quantum Information and Computation 6 (2006) 400-409.
General pure multipartite entanglement state and the Segre variety Hoshang Heydari J. Phys. A: Math. Gen. 39 (2006) 9839-9844.
Entanglement monotone for multi-qubit states based on geometric invariant theory Hoshang Heydari J. Math. Phys. 47, 012103 (2006).
Quantum entanglement measure based on wedge product Hoshang Heydari Quantum Information and Computation 6(2) (2006) 166-172.

Publications 2005

Concurrence classes for an arbitrary multi-qubit state based on positive operator valued measure Hoshang Heydari J. Phys. A: Math. Gen. 38 (2005) 11007-11017.
Concurrence classes for general pure multipartite states Hoshang Heydari J. Phys. A: Math. Gen. 38 (2005) 8667-8679.
Complex multi-projective variety and entanglement Hoshang Heydari and Gunnar Björk J. Phys. A: Math. Gen. 38, 3203-3211 (2005).
Entanglement tensor for general pure multipartite quantum states Hoshang Heydari and Gunnar Björk Quantum Information and Computation 5, No. 2, 146-155 (2005).
Entanglement criterion for pure M by N bipartite quantum states Hoshang Heydari and Gunnar Björk Opt. Spectrosc., 99, nr. 3, (2005) 379.

Publications 2004

Entanglement measure for general multipartite quantum states Hoshang Heydari and Gunnar Björk J. of Phys. A: Mathematical and General, 37, (2004) 1-10.
An experimental demonstration of single photon nonlocality B. Hessmo, P. Usachev, H. Heydari, G. Björk Phy. Rev. Lett., 92, 180401, 2004.

Publications 2003

Mutual first order coherence of phase-locked lasers Hoshang Heydari and Gunnar Björk J. Opt. B, 6, issue 1 , pp. 46-53, 2003.
Measurable entanglement criterion for two qubit H. Heydari+, G. Björk, L. Sánchez-Soto Phys. Rev. A , 68, 062314, 2003.
Hilbert space factorization and partial measurements G. Björk, P. Jonasson, H. Heydari, J. Söderholm and B. Hessmo Opt. Spectrosc., vol. 94, pp. 754-758, 2003.