Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Rombouts, Stefan"'
Autor:
Domínguez, Federico, Fellner, Michael, Klaver, Berend, Rombouts, Stefan, Ertler, Christian, Lechner, Wolfgang
Using the Parity Flow formalism, we show that physical SWAP gates can be eliminated in linear hardware architectures, without increasing the total number of two-qubit operations. This has a significant impact on the execution time of quantum circuits
Externí odkaz:
http://arxiv.org/abs/2410.16382
Autor:
Klaver, Berend, Rombouts, Stefan, Fellner, Michael, Messinger, Anette, Ender, Kilian, Ludwig, Katharina, Lechner, Wolfgang
We present a formalism based on tracking the flow of parity quantum information to implement algorithms on devices with limited connectivity without qubit overhead, SWAP operations or shuttling. Instead, we leverage the fact that entangling gates not
Externí odkaz:
http://arxiv.org/abs/2408.10907
Autor:
Zhao, Jinmo, Jimenez-Hoyos, Carlos A., Scuseria, Gustavo E., Huerga, Daniel, Dukelsky, Jorge., Rombouts, Stefan. M. A., Ortiz, Gerardo
Publikováno v:
J. Phys.: Condens. Matt. 26, 455601 (2014)
We present a mapping of elementary fermion operators onto a quadratic form of composite fermionic and bosonic operators. The mapping is an exact isomorphism as long as the physical constraint of one composite particle per cluster is satisfied. This c
Externí odkaz:
http://arxiv.org/abs/1408.1014
We determine the zero temperature quantum phase diagram of a p_x+ip_y pairing model based on the exactly solvable hyperbolic Richardson-Gaudin model. We present analytical and large-scale numerical results for this model. In the continuum limit, the
Externí odkaz:
http://arxiv.org/abs/1008.3406
Autor:
Rombouts, Stefan M. A.
The ground state phase diagram of the two-dimensional attractive Hubbard model with population imbalance is explored using a mean field ansatz. A linear programming algorithm is used to identify the blocked states, such that the population imbalance
Externí odkaz:
http://arxiv.org/abs/0902.1450
Publikováno v:
Phys. Rev. Lett. 96, 190402 (2006)
The ground state phase diagram of the one-dimensional Bose-Fermi Hubbard model is studied in the canonical ensemble using a quantum Monte Carlo method. We focus on the case where both species have half filling in order to maximize the pairing correla
Externí odkaz:
http://arxiv.org/abs/cond-mat/0512243
Publikováno v:
J Comp Phys, 225/2 pp. 2249-2266 (2007)
Quantum Monte Carlo algorithms based on a world-line representation such as the worm algorithm and the directed loop algorithm are among the most powerful numerical techniques for the simulation of non-frustrated spin models and of bosonic models. Bo
Externí odkaz:
http://arxiv.org/abs/cond-mat/0508462
Publikováno v:
Phys.Rev. E73 (2006) 056703
A quantum Monte Carlo method with non-local update scheme is presented. The method is based on a path-integral decomposition and a worm operator which is local in imaginary time. It generates states with a fixed number of particles and respects other
Externí odkaz:
http://arxiv.org/abs/cond-mat/0508431
Publikováno v:
Phys.Rev.Lett. 96 (2006) 180603
We present a new non-local updating scheme for quantum Monte Carlo simulations, which conserves particle number and other symmetries. It allows exact symmetry projection and direct evaluation of the equal-time Green's function and other observables i
Externí odkaz:
http://arxiv.org/abs/cond-mat/0508319
Publikováno v:
Phys.Rev. C69 (2004) 061303
Forty years ago Richardson showed that the eigenstates of the pairing Hamiltonian with constant interaction strength can be calculated by solving a set of non-linear coupled equations. However, in the case of Fermions these equations lead to singular
Externí odkaz:
http://arxiv.org/abs/nucl-th/0312070