mogućnostima kvantno-mehaničkih računara
The work includes the analyses of the theoretical capabilities of quantum-mechanical versus classical computer models in terms of their universality, their application domain, their efficacy in…
Optimal basis for the generalized Dicke model
- PhysicsPhysical Review A
A methodology is devised for building optimal bases for the generalized Dicke model based on the symmetry adapted variational solution to the problem. At order zero, the matter sector is constructed…
Teaching quantum information technologies and a practical module for online and offline undergraduate students
- Physics, Education
Hao Tang,1, 2, ∗ Tian-Yu Wang,1, 2 Ruoxi Shi,1, 2 and Xian-Min Jin1, 2, † 1Center for Integrated Quantum Information Technologies (IQIT), School of Physics and Astronomy and State Key Laboratory of…
Counting atypical black hole microstates from entanglement wedges
Disentangled black hole microstates are atypical states in holographic CFTs whose gravity duals do not have smooth horizons. If there exist suﬃciently many disentangled microstates to account for the…
Quantum measurement: a game between observer and nature?
What is the observer's role in quantum measurement? Obviously, observers prepare the apparatus, observe and interpret the measured results. Although the observer will have a certain influence on the…
Topological Quantum Programming in TED-K
- Computer Science
A fundamental and natural scheme is described, for typed functional topological quantum programming which is topological-hardware aware and natively reflects the universal fine technical detail of topological q-bits, namely of symmetry-protected (or enhanced) topologically ordered Laughlin-type any on ground states in topological phases of quantum materials.
Can the observer know the state of Schrodinger's cat without opening the box?
In order to know if the Schrödinger’s cat is alive or dead without opening the box, observers have to play a game with nature. The observers have to “guess” (with degrees of belief) the state of the…
Protecting quantum entanglement in thermal reservoir by detuning
- PhysicsPhysica Scripta
In this work, the quantum entanglement dynamics of a two-atom system in the thermal reservoir is investigated. An analytical solution of the single atom in the thermal reservoir and the expression of…
Kościk, Przemysław Entanglement in S states of two-electron quantum dots with Coulomb impurities
Autonomous quantum error correction in a four-photon Kerr parametric oscillator
- Physicsnpj Quantum Information
Autonomous quantum error correction has gained considerable attention to avoid complicated measurements and feedback. Despite its simplicity compared with the conventional measurement-based quantum…
SHOWING 1-10 OF 279 REFERENCES
Fluctuation Properties of Nuclear Energy Levels and Widths : Comparison of Theory with Experiment
We analyze the fluctuation properties of nuclear energy levels and widths with new spectrally averaged measures. A remarkably close agreement between the predictions of random-matrix theories and…
A universal two-bit gate for quantum computation
- MathematicsProceedings of the Royal Society of London. Series A: Mathematical and Physical Sciences
We prove the existence of a class of two-input, two-output gates any one of which is universal for quantum computation. This is done by explicitly constructing the three-bit gate introduced by…
Estimation of the Local Density of States on a Quantum Computer
We report an efficient quantum algorithm for estimating the local density of states (LDOS) on a quantum computer. The LDOS describes the redistribution of energy levels of a quantum system under the…
Quantum entanglement is at the heart of many tasks in quantum information. Apart from simple cases (low dimensions, few particles, pure states), however, the mathematical structure of entanglement is…
Daylight quantum key distribution over 1.6 km
- PhysicsPhysical review letters
Quantum key distribution has been demonstrated over a point-to-point 1.6-km atmospheric optical path in full daylight, bringing QKD a step closer to surface- to-satellite and other long-distance applications.
Quantum cryptography based on Bell's theorem.
- Mathematics, PhysicsPhysical review letters
Practical application of the generalized Bells theorem in the so-called key distribution process in cryptography is reported. The proposed scheme is based on the Bohms version of the…
Ion Trap Quantum Computing with Ca+ Ions
- PhysicsQuantum Inf. Process.
The scheme of an ion trap quantum computer is described and the implementation of quantum gate operations with trapped Ca+ ions is discussed, and several recent experiments investigating entanglement of ions are investigated.