Technical Roadmap for Fault-Tolerant Quantum Computing
... (zero or ones), while a state of n qubits can only be described using 2n-1 complex numbers, i.e. exponentially more information. This means that an exponential number of classical bits would be needed to store the state of a quantum computer, even approximately. ...
... (zero or ones), while a state of n qubits can only be described using 2n-1 complex numbers, i.e. exponentially more information. This means that an exponential number of classical bits would be needed to store the state of a quantum computer, even approximately. ...
Entanglement and Quantum Cryptography Joonwoo Bae Universitat de Barcelona
... applications. The present thesis covers several topics on quantum cryptography, such as the security analysis of quantum channels for key distribution protocols and the study of quantum cloning. First, we introduce a general formalism to characterize the cryptographic properties of quantum channels ...
... applications. The present thesis covers several topics on quantum cryptography, such as the security analysis of quantum channels for key distribution protocols and the study of quantum cloning. First, we introduce a general formalism to characterize the cryptographic properties of quantum channels ...
Full characterization of polarization states of light via direct
... The first demonstration of direct quantum wavefunction measurement was reported recently7. In this study, the transverse spatial wavefunction, that is, the probability amplitude for photon detection at each position, was measured directly. In contrast to tomography, this method is considered direct b ...
... The first demonstration of direct quantum wavefunction measurement was reported recently7. In this study, the transverse spatial wavefunction, that is, the probability amplitude for photon detection at each position, was measured directly. In contrast to tomography, this method is considered direct b ...
Full characterization of polarization states of light via direct
... The first demonstration of direct quantum wavefunction measurement was reported recently7. In this study, the transverse spatial wavefunction, that is, the probability amplitude for photon detection at each position, was measured directly. In contrast to tomography, this method is considered direct b ...
... The first demonstration of direct quantum wavefunction measurement was reported recently7. In this study, the transverse spatial wavefunction, that is, the probability amplitude for photon detection at each position, was measured directly. In contrast to tomography, this method is considered direct b ...
This article has been published i The Tkoth Maatian Review but has
... together. We do not believe on the way of classification of particles as done in current particle physics. We think the conceptual base of today particle physics is mainly wrong. Hence, we must try to find another conceptual base of existence of elementary particles, constituting the least fundament ...
... together. We do not believe on the way of classification of particles as done in current particle physics. We think the conceptual base of today particle physics is mainly wrong. Hence, we must try to find another conceptual base of existence of elementary particles, constituting the least fundament ...
Lundeen PRL 102, 020..
... 93% and NðIE Þ is 92%, the data in Table II suggest that when E is in the inner path, P is not, and vice versa, hence the large values for NðIP &OE Þ ¼ 64% and NðOP &IE Þ ¼ 72%. The fact that the sum of these two seemingly disjoint joint-occupation probabilities exceeds 1 is the contradiction with c ...
... 93% and NðIE Þ is 92%, the data in Table II suggest that when E is in the inner path, P is not, and vice versa, hence the large values for NðIP &OE Þ ¼ 64% and NðOP &IE Þ ¼ 72%. The fact that the sum of these two seemingly disjoint joint-occupation probabilities exceeds 1 is the contradiction with c ...
spin-dependent selection rules for dipole transitions
... − er is one of the simplest potential in quantum mechanics that can be solved analytically. Although the problem is a two body problem the related wave equation becomes one particle equation after the center of mass motion is separated out. Because of the fact that proton is more massive than electr ...
... − er is one of the simplest potential in quantum mechanics that can be solved analytically. Although the problem is a two body problem the related wave equation becomes one particle equation after the center of mass motion is separated out. Because of the fact that proton is more massive than electr ...
Exceptional Points and Dynamical Phase Transitions
... point) and the topological phase of the crossing point is twice the Berry phase. When rk < 1 (regime of resonance overlapping with avoided level crossings), the Schrödinger equation is nonlinear and the levels are mixed (entangled) in the parameter range in which the resonances overlap. The paramet ...
... point) and the topological phase of the crossing point is twice the Berry phase. When rk < 1 (regime of resonance overlapping with avoided level crossings), the Schrödinger equation is nonlinear and the levels are mixed (entangled) in the parameter range in which the resonances overlap. The paramet ...
Quantum teleportation
Quantum teleportation is a process by which quantum information (e.g. the exact state of an atom or photon) can be transmitted (exactly, in principle) from one location to another, with the help of classical communication and previously shared quantum entanglement between the sending and receiving location. Because it depends on classical communication, which can proceed no faster than the speed of light, it cannot be used for faster-than-light transport or communication of classical bits. It also cannot be used to make copies of a system, as this violates the no-cloning theorem. While it has proven possible to teleport one or more qubits of information between two (entangled) atoms, this has not yet been achieved between molecules or anything larger.Although the name is inspired by the teleportation commonly used in fiction, there is no relationship outside the name, because quantum teleportation concerns only the transfer of information. Quantum teleportation is not a form of transportation, but of communication; it provides a way of transporting a qubit from one location to another, without having to move a physical particle along with it.The seminal paper first expounding the idea was published by C. H. Bennett, G. Brassard, C. Crépeau, R. Jozsa, A. Peres and W. K. Wootters in 1993. Since then, quantum teleportation was first realized with single photons and later demonstrated with various material systems such as atoms, ions, electrons and superconducting circuits. The record distance for quantum teleportation is 143 km (89 mi).