A New and Feasible Protocol for Semi
... In many SQKD protocols (such as “QKD with classical Bob” and “QKD with classical Alice” described above), it is assumed that the classical party can either do nothing (the CTRL operation) or measure in the computational basis {|0i, |1i} and then resend (the SIFT operation). In practical (photonic) i ...
... In many SQKD protocols (such as “QKD with classical Bob” and “QKD with classical Alice” described above), it is assumed that the classical party can either do nothing (the CTRL operation) or measure in the computational basis {|0i, |1i} and then resend (the SIFT operation). In practical (photonic) i ...
Lossless Quantum Data Compression and Secure Direct
... cryptographic protocol. This so-called “ping-pong protocol” developed in [P2] uses entanglement as a resource for secure communication. Similiar to the E91 protocol proposed by Ekert [13] and simplified by Bennet et al. [14], the protocol is based on an entangled pair of qubits. In contrast to E91, ...
... cryptographic protocol. This so-called “ping-pong protocol” developed in [P2] uses entanglement as a resource for secure communication. Similiar to the E91 protocol proposed by Ekert [13] and simplified by Bennet et al. [14], the protocol is based on an entangled pair of qubits. In contrast to E91, ...
Lecture Notes for Physics 229: Quantum Information and Computation
... the universe is quantum mechanical. How does quantum theory shed light on the nature of information? It must have been clear already in the early days of quantum theory that classical ideas about information would need revision under the new physics. For example, the clicks registered in a detector ...
... the universe is quantum mechanical. How does quantum theory shed light on the nature of information? It must have been clear already in the early days of quantum theory that classical ideas about information would need revision under the new physics. For example, the clicks registered in a detector ...
Physical Foundations of Quantum Electronics
... it is mainly at the boundaries of the explored that one should look for new ideas and discoveries, this book will be helpful for both a researcher and an ambitious student aiming at research in nonlinear optics, laser physics, quantum or atom optics. Although some parts of the book look very new eve ...
... it is mainly at the boundaries of the explored that one should look for new ideas and discoveries, this book will be helpful for both a researcher and an ambitious student aiming at research in nonlinear optics, laser physics, quantum or atom optics. Although some parts of the book look very new eve ...
The Role of Indistinguishability of Identical Particles in
... particles. This establishes the fact that useful quantum information processing can be accomplished by particle statistics alone. In chapter seven, we present an application of particle statistics to the problem of optimal discrimination of some particular quantum states. We show that we can achieve ...
... particles. This establishes the fact that useful quantum information processing can be accomplished by particle statistics alone. In chapter seven, we present an application of particle statistics to the problem of optimal discrimination of some particular quantum states. We show that we can achieve ...
Quantum Query Algorithms - Baltic Journal of Modern Computing
... A long standing open question was whether it is possible to achieve a larger gap between quantum exact and classical deterministic query complexity of a total function with no error allowed. The conjecture about relation between complexity measures was the following: D( f ) QE ( f ) ≥ ...
... A long standing open question was whether it is possible to achieve a larger gap between quantum exact and classical deterministic query complexity of a total function with no error allowed. The conjecture about relation between complexity measures was the following: D( f ) QE ( f ) ≥ ...
Physics at the FQMT`11 conference
... possible ‘quantum processors’ in the future, but is inevitable due to coupling to an environment which enables us to read out information from systems. The most important questions (from many still unanswered ones) related to quantum decoherence and its understanding, at least as it seems now, are t ...
... possible ‘quantum processors’ in the future, but is inevitable due to coupling to an environment which enables us to read out information from systems. The most important questions (from many still unanswered ones) related to quantum decoherence and its understanding, at least as it seems now, are t ...
J. Phys. Chem. B 106, 8271, 2002
... H2O(X1A1) + pω f H2O(A1B1) f H(2S) + OH(X2Π, nj) (1) where ω is the photon frequency, and nj represents the ro-vibrational state of the OH photofragment. The photodissociation reaction, introduced by eq 1, is ideal for exploring the capabilities of new computational methods because it has been exten ...
... H2O(X1A1) + pω f H2O(A1B1) f H(2S) + OH(X2Π, nj) (1) where ω is the photon frequency, and nj represents the ro-vibrational state of the OH photofragment. The photodissociation reaction, introduced by eq 1, is ideal for exploring the capabilities of new computational methods because it has been exten ...
Quantum information processing beyond ten ion
... - work for which he received a Nobel prize in 1933. His eponymous equation describes particles and photons, and quantum mechanics in general, in terms of wave phenomena. Here, quantum effects need not only be considered in terms of quantised energies - but also in terms of waves and phases which may ...
... - work for which he received a Nobel prize in 1933. His eponymous equation describes particles and photons, and quantum mechanics in general, in terms of wave phenomena. Here, quantum effects need not only be considered in terms of quantised energies - but also in terms of waves and phases which may ...
The presentation template
... Both speakers yesterday referred to how Schrödinger coined the term “entanglement” in 1935 (or earlier) "When two systems, …… enter into temporary physical interaction due to known forces between them, and …… separate again, then they can no longer be described in the same way as before, viz. by end ...
... Both speakers yesterday referred to how Schrödinger coined the term “entanglement” in 1935 (or earlier) "When two systems, …… enter into temporary physical interaction due to known forces between them, and …… separate again, then they can no longer be described in the same way as before, viz. by end ...
Quantum Error Correction (QEC) - ETH E
... construction. If we are able to implement such a set of universal gates we can compute what ever we want. But in quantum computation, infinitely many different gates exist. Implementing all of them is impossible. But fortunately, it turns out that also in quantum computation sets of universal quantu ...
... construction. If we are able to implement such a set of universal gates we can compute what ever we want. But in quantum computation, infinitely many different gates exist. Implementing all of them is impossible. But fortunately, it turns out that also in quantum computation sets of universal quantu ...
Research Proposal for a Quantum Computer Programming
... certainty its future state. For example, if one throws a ball up into the air with a certain amount of force, one can predict how long it will take to fall back to Earth. In this view of the world things are completely deterministic- there is no randomness in the world. Taking this view further, if ...
... certainty its future state. For example, if one throws a ball up into the air with a certain amount of force, one can predict how long it will take to fall back to Earth. In this view of the world things are completely deterministic- there is no randomness in the world. Taking this view further, if ...
Defining and detecting quantum speedup
... consensus may be time- and community-dependent [14]. In the absence of a consensus about what is the best classical algorithm, we define potential (quantum) speedup as a speedup compared to a specific classical algorithm or a set of classical algorithms. An example is the simulation of the time evol ...
... consensus may be time- and community-dependent [14]. In the absence of a consensus about what is the best classical algorithm, we define potential (quantum) speedup as a speedup compared to a specific classical algorithm or a set of classical algorithms. An example is the simulation of the time evol ...
chapter 5-1---photons in semiconductors
... emitted photon. Nonradiative recombination: transfer of the energy to lattice vibrations or to another free electron. Recombination may also occur indirectly via traps or defect centers, they can act as a recombination center if it is capable of trapping both the electron and the hole, thereby incre ...
... emitted photon. Nonradiative recombination: transfer of the energy to lattice vibrations or to another free electron. Recombination may also occur indirectly via traps or defect centers, they can act as a recombination center if it is capable of trapping both the electron and the hole, thereby incre ...
Dynamical Aspects of Information Storage in Quantum
... In this respect, the assumption of finite precision of all physically realizable state preparation, manipulation, and registration procedures is particularly important, and can even be treated as an empirical given. This premise is general enough to subsume (a) fundamental limitations imposed by the ...
... In this respect, the assumption of finite precision of all physically realizable state preparation, manipulation, and registration procedures is particularly important, and can even be treated as an empirical given. This premise is general enough to subsume (a) fundamental limitations imposed by the ...
Computational Methods for Simulating Quantum Computers
... the state of the qubits [9]. From elementary linear algebra we know that a rotation of a vector corresponds to the multiplication of the vector by a unitary matrix. Thus, the internal state of the quantum computer evolves in time according to a sequence of unitary transformations. Any such sequence ...
... the state of the qubits [9]. From elementary linear algebra we know that a rotation of a vector corresponds to the multiplication of the vector by a unitary matrix. Thus, the internal state of the quantum computer evolves in time according to a sequence of unitary transformations. Any such sequence ...