Optimized Reversible Vedic Multipliers for High Speed Low Power
... Conventional combinational logic circuits are known to dissipate heat for every bit of information that is lost. This is also evident from the second law of thermodynamics which states that any irreversible process leads to loss of energy. Landauer [3] showed that any gate that is irreversible, nece ...
... Conventional combinational logic circuits are known to dissipate heat for every bit of information that is lost. This is also evident from the second law of thermodynamics which states that any irreversible process leads to loss of energy. Landauer [3] showed that any gate that is irreversible, nece ...
Single defect centres in diamond: A review
... among them should be controllable. At the same time, those systems which are discussed for data communication must be optically active which means, that they should show a high oscillator strength for an electric dipole transition between their ground and some optically excited state. Individual ion ...
... among them should be controllable. At the same time, those systems which are discussed for data communication must be optically active which means, that they should show a high oscillator strength for an electric dipole transition between their ground and some optically excited state. Individual ion ...
Interacting Quantum Observables: Categorical Algebra and
... some orthonormal basis [27, 28]. Since these algebras correspond precisely to nondegenerate quantum observables, we refer to them as observable structures. Observable structures (δ, ) and (δ 0 , 0 ) which correspond to complementary observables enjoy a special relationship: the main body of this p ...
... some orthonormal basis [27, 28]. Since these algebras correspond precisely to nondegenerate quantum observables, we refer to them as observable structures. Observable structures (δ, ) and (δ 0 , 0 ) which correspond to complementary observables enjoy a special relationship: the main body of this p ...
Mathematical foundation of quantum annealing
... achieve a given precision of the answer is shorter in QA than in SA. Also, the magnitude of error is smaller for QA than for SA if we run the algorithm for a fixed finite amount of time. We shall show some theoretical bases for these conclusions in this paper. Numerical evidence is found in Refs. 9– ...
... achieve a given precision of the answer is shorter in QA than in SA. Also, the magnitude of error is smaller for QA than for SA if we run the algorithm for a fixed finite amount of time. We shall show some theoretical bases for these conclusions in this paper. Numerical evidence is found in Refs. 9– ...
The powerpoint presentation of the material
... Certain properties of physical objects form complementary pairs. The more accurately one property from a pair is known, the less accurately it is possible, in principle, to know the other. The position & momentum of a particle are a complementary pair of properties: ...
... Certain properties of physical objects form complementary pairs. The more accurately one property from a pair is known, the less accurately it is possible, in principle, to know the other. The position & momentum of a particle are a complementary pair of properties: ...
Quantum Information Chapter 10. Quantum Shannon Theory
... but there is a lot we won’t cover. For example, we will mostly consider information theory in an asymptotic setting, where the same quantum channel or state is used arbitrarily many times, thus focusing on issues of principle rather than more practical questions about devising efficient protocols. ...
... but there is a lot we won’t cover. For example, we will mostly consider information theory in an asymptotic setting, where the same quantum channel or state is used arbitrarily many times, thus focusing on issues of principle rather than more practical questions about devising efficient protocols. ...
Quantum Information Chapter 10. Quantum Shannon Theory
... Shannon theory, but there is a lot we won’t cover. For example, we will mostly consider information theory in an asymptotic setting, where the same quantum channel or state is used arbitrarily many times, thus focusing on issues of principle rather than more practical questions about devising effici ...
... Shannon theory, but there is a lot we won’t cover. For example, we will mostly consider information theory in an asymptotic setting, where the same quantum channel or state is used arbitrarily many times, thus focusing on issues of principle rather than more practical questions about devising effici ...
Strong no-go theorem for Gaussian quantum bit commitment
... impossible even if Alice and Bob are restricted to manipulating Gaussian states. Although Lemma 1 can be seen as a weak version of Uhlmann’s theorem in the sense that the intrinsic purification does not reach Uhlmann’s bound, it is sufficient here because the quantities of interest in terms of guess ...
... impossible even if Alice and Bob are restricted to manipulating Gaussian states. Although Lemma 1 can be seen as a weak version of Uhlmann’s theorem in the sense that the intrinsic purification does not reach Uhlmann’s bound, it is sufficient here because the quantities of interest in terms of guess ...
tutorial on quantum error correction and fault
... E and F act the same, so we need not distinguish. A stabilizer code with distance d corrects (d-1)/2 errors (i.e., to correct t errors, we need d = 2t+1): ...
... E and F act the same, so we need not distinguish. A stabilizer code with distance d corrects (d-1)/2 errors (i.e., to correct t errors, we need d = 2t+1): ...
Quantum information processing beyond ten ion
... The requirements for a functional quantum computer have been summarised by DiVincenzo [12]: it is imperative to be able to initialise a well-defined quantum register, to manipulate it and be able to retrieve the information before the information is lost. These criteria have originally been suggeste ...
... The requirements for a functional quantum computer have been summarised by DiVincenzo [12]: it is imperative to be able to initialise a well-defined quantum register, to manipulate it and be able to retrieve the information before the information is lost. These criteria have originally been suggeste ...
J. Phys. Chem. B 106, 8271, 2002
... calculations than those reported by earlier SC-IVR computations (e.g., see Figure 1 of ref 16). Figure 2a shows the comparison of survival amplitudes computed semiclassically (solid lines) and according to quantum mechanics (dashed lines). Results are shown for the H2O molecule initially prepared in ...
... calculations than those reported by earlier SC-IVR computations (e.g., see Figure 1 of ref 16). Figure 2a shows the comparison of survival amplitudes computed semiclassically (solid lines) and according to quantum mechanics (dashed lines). Results are shown for the H2O molecule initially prepared in ...
Spin squeezing and quantum correlations
... eigen states of S 2 and Sz with respect to any choice of the axis of quantization. We refer to such states as non-oriented. While an oriented state is characterized by a single direction, viz., the axis of quantization (specified by two real variables θ ; φ ) in the physical space, a non-oriented st ...
... eigen states of S 2 and Sz with respect to any choice of the axis of quantization. We refer to such states as non-oriented. While an oriented state is characterized by a single direction, viz., the axis of quantization (specified by two real variables θ ; φ ) in the physical space, a non-oriented st ...
Quantum computing
Quantum computing studies theoretical computation systems (quantum computers) that make direct use of quantum-mechanical phenomena, such as superposition and entanglement, to perform operations on data. Quantum computers are different from digital computers based on transistors. Whereas digital computers require data to be encoded into binary digits (bits), each of which is always in one of two definite states (0 or 1), quantum computation uses quantum bits (qubits), which can be in superpositions of states. A quantum Turing machine is a theoretical model of such a computer, and is also known as the universal quantum computer. Quantum computers share theoretical similarities with non-deterministic and probabilistic computers. The field of quantum computing was initiated by the work of Yuri Manin in 1980, Richard Feynman in 1982, and David Deutsch in 1985. A quantum computer with spins as quantum bits was also formulated for use as a quantum space–time in 1968.As of 2015, the development of actual quantum computers is still in its infancy, but experiments have been carried out in which quantum computational operations were executed on a very small number of quantum bits. Both practical and theoretical research continues, and many national governments and military agencies are funding quantum computing research in an effort to develop quantum computers for civilian, business, trade, and national security purposes, such as cryptanalysis.Large-scale quantum computers will be able to solve certain problems much more quickly than any classical computers that use even the best currently known algorithms, like integer factorization using Shor's algorithm or the simulation of quantum many-body systems. There exist quantum algorithms, such as Simon's algorithm, that run faster than any possible probabilistic classical algorithm.Given sufficient computational resources, however, a classical computer could be made to simulate any quantum algorithm, as quantum computation does not violate the Church–Turing thesis.