Results 31 to 40 of about 93,711 (291)
, 2011 Coffman, Kundu and Wootters presented the 3-tangle of three qubits in [Phys. Rev. A 61, 052306 (2000)]. Wong and Christensen extended the 3-tangle to even number of qubits, known as $n$-tangle [Phys. Rev. A 63, 044301 (2001)]. In this paper, we propose a
Li, D.
core +1 more source
Tunable interaction of superconducting flux qubits in circuit QED
, 2015 We propose to implement tunable interaction of superconducting flux qubits with cavity-assisted interaction and strong driving. The qubits have a three-level Lambda configuration, and the decay of the excited state will be greatly suppressed due to the ...
Gao, Yu-Mei +4 more
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On the generation of multipartite entangled states in Josephson architectures [PDF]
, 2006 We propose and analyze a scheme for the generation of multipartite entangled states in a system of inductively coupled Josephson flux qubits. The qubits have fixed eigenfrequencies during the whole process in order to minimize decoherence effects and ...
A. Messina +5 more
core +2 more sources
Metastable Superconducting Qubit [PDF]
Physical Review Letters, 2010 We propose a superconducting qubit design, based on a tunable RF-SQUID and nanowire kinetic inductors, which has a dramatically reduced transverse electromagnetic coupling to its environment, so that its excited state should be metastable. If electromagnetic interactions are in fact responsible for the current excited-state decay rates of ...
openaire +4 more sources
Which verification qubits perform best for secure communication in noisy channel?
, 2015 In secure quantum communication protocols, a set of single qubits prepared using 2 or more mutually unbiased bases or a set of $n$-qubit ($n\geq2$) entangled states of a particular form are usually used to form a verification string which is subsequently
De, Asok +4 more
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Nature Communications, 2023 AbstractTopological phases of spin liquids with constrained disorder can host a kinetics of fractionalized excitations. However, spin-liquid phases with distinct kinetic regimes have proven difficult to observe experimentally. Here we present a realization of kagome spin ice in the superconducting qubits of a quantum annealer, and use it to demonstrate
Alejandro Lopez-Bezanilla +5 more
openaire +4 more sources
Crossed products and quantum reference frames: on the observer-dependence of gravitational entropy
Journal of High Energy PhysicsA significant step towards a rigorous understanding of perturbative gravitational entropy was recently achieved by a series of works showing that a proper accounting of gauge invariance and observer degrees of freedom converts the Type III algebra of QFT
Julian De Vuyst +3 more
doaj +1 more source
Getting through to a qubit by magnetic solitons
New Journal of Physics, 2015 We propose a method for acting on the spin state of a spin- $\frac{1}{2}$ localized particle, or qubit , by means of a magnetic signal effectively generated by the nearby transit of a magnetic soliton, there conveyed through a transmission line. We first
Alessandro Cuccoli +3 more
doaj +1 more source
Real-Time Threat Mitigation in Financial IT Infrastructures Using Quantum Computing [PDF]
International Journal of Electronics and TelecommunicationsFinancial institutions continue to face evolving cyber security threats that require immediate detection and mitigation to prevent significant damage. Classical-based cyber security mechanisms struggle to keep up with these emerging threats due to their ...
Jean Marie Vianney Sindayigaya
doaj +1 more source