Decoherence in Solid State Qubits
... turn can be constituted by more than one quantum object. The same rules of quantum mechanics that allow us to explain and predict interference of one object with itself, as the case of an electron through a double slit, predict that a system composed by two quantum subsystems can be in a state that ...
... turn can be constituted by more than one quantum object. The same rules of quantum mechanics that allow us to explain and predict interference of one object with itself, as the case of an electron through a double slit, predict that a system composed by two quantum subsystems can be in a state that ...
Review - Sociedade Brasileira de Química
... Heisenberg chains, which are known to follow Haldane’s conjecture,59 i.e. half-integer spin chains are critical with no long-range order and integer spin chains are disordered. Moreover, the addition of the relevant Wess-Zumino term to the quantum NL S model, equation (3), changes its properties dra ...
... Heisenberg chains, which are known to follow Haldane’s conjecture,59 i.e. half-integer spin chains are critical with no long-range order and integer spin chains are disordered. Moreover, the addition of the relevant Wess-Zumino term to the quantum NL S model, equation (3), changes its properties dra ...
Three Roads To Quantum Gravity
... Similarly, physical theories differ in the basic assumptions they make about observation and reality. If we are not careful to spell them out, confusion can and will occur when we try to compare descriptions of the world that come out of different theories. In this book we shall be concerned with tw ...
... Similarly, physical theories differ in the basic assumptions they make about observation and reality. If we are not careful to spell them out, confusion can and will occur when we try to compare descriptions of the world that come out of different theories. In this book we shall be concerned with tw ...
Quantum Information Chapter 10. Quantum Shannon Theory
... same probability distribution X, we say that the letters are independent and identically distributed, abbreviated i.i.d. We’ll use X n to denote the ensemble of n-letter messages in which each letter is generated independently by sampling from X, and ~x = (x1 x2 . . . xn ) to denote a string of bits ...
... same probability distribution X, we say that the letters are independent and identically distributed, abbreviated i.i.d. We’ll use X n to denote the ensemble of n-letter messages in which each letter is generated independently by sampling from X, and ~x = (x1 x2 . . . xn ) to denote a string of bits ...
ppt - Harvard Condensed Matter Theory group
... Rich vortex physics of F=2 nematic states. Non-Abelian fundamental group. Spinor condensates in an optical lattice. Exchange interactions in the insulating states can lead to various kinds of magnetic ordering. ...
... Rich vortex physics of F=2 nematic states. Non-Abelian fundamental group. Spinor condensates in an optical lattice. Exchange interactions in the insulating states can lead to various kinds of magnetic ordering. ...
hep-th/9303127 PDF
... The purpose of these lectures is to present a short review of some recent developments of the lattice approach to the problem of the quantization of gravity. This approach goes back to the seminal paper by Regge (Regge (1961)), but many new and sometimes surprising results have been obtained during ...
... The purpose of these lectures is to present a short review of some recent developments of the lattice approach to the problem of the quantization of gravity. This approach goes back to the seminal paper by Regge (Regge (1961)), but many new and sometimes surprising results have been obtained during ...
Towards a Tight Finite Key Analysis for BB84
... either X or Z, chosen at random. The X bits will be used to extract a key, while the Z are used to check security. She sends the qubit over a public channel to Bob, while the eavesdropper, Eve, may interfere as she wishes. Bob measures the system randomly either in the X or Z basis. Alice and Bob si ...
... either X or Z, chosen at random. The X bits will be used to extract a key, while the Z are used to check security. She sends the qubit over a public channel to Bob, while the eavesdropper, Eve, may interfere as she wishes. Bob measures the system randomly either in the X or Z basis. Alice and Bob si ...
On Zurek`s Derivation of the Born Rule
... eigenbasis of observables O on a system with state that in every measurement of such an observable O vector w one outcome (represented by the eigenvalue λj corresponding to one of the eigenvectors vj ) will occur, such that p(vj ) = 1 and p(vi ) = 0 for i = j , and Eq. (1) follows. In spite of it ...
... eigenbasis of observables O on a system with state that in every measurement of such an observable O vector w one outcome (represented by the eigenvalue λj corresponding to one of the eigenvectors vj ) will occur, such that p(vj ) = 1 and p(vi ) = 0 for i = j , and Eq. (1) follows. In spite of it ...
Quantum Private Information Retrieval - UvA/FNWI
... which case the “answers” to the queries consist not only of one bit, but of blocks of a bits. It depends on the setting which of the parameters are more important than others. For example in data storage and transmission, one would like to have a large δ and small length of the codeword whereas the ...
... which case the “answers” to the queries consist not only of one bit, but of blocks of a bits. It depends on the setting which of the parameters are more important than others. For example in data storage and transmission, one would like to have a large δ and small length of the codeword whereas the ...
A conformal field theory approach to the fractional quantum Hall
... However, it was discovered in the 1980’s that there exist states of matter that can not be described using this theory. These new phases can have the same symmetry properties, but are of a different topological order. There are no local order parameters that describe the different topological phases ...
... However, it was discovered in the 1980’s that there exist states of matter that can not be described using this theory. These new phases can have the same symmetry properties, but are of a different topological order. There are no local order parameters that describe the different topological phases ...
Decoherence, non-Markovianity and quantum estimation in qubit
... is the preservation of its coherent time evolution and its non-classical correlations. This would be no problem if quantum systems could be regarded as isolated systems. But the standard description of quantum dynamics, in terms of Schrödinger equation and unitary evolution, is an idealization. In ...
... is the preservation of its coherent time evolution and its non-classical correlations. This would be no problem if quantum systems could be regarded as isolated systems. But the standard description of quantum dynamics, in terms of Schrödinger equation and unitary evolution, is an idealization. In ...
Aalborg Universitet The effect of time-dependent coupling on non-equilibrium steady states
... The only α dependence can be found in ̺α P d (H), where P d (H) is the projection on the subspace generated by the discrete eigenfunctions of H. But this part does not contribute to the stationary current as can be seen in Section 4. Here the ergodic limit is essential, because it kills off the osci ...
... The only α dependence can be found in ̺α P d (H), where P d (H) is the projection on the subspace generated by the discrete eigenfunctions of H. But this part does not contribute to the stationary current as can be seen in Section 4. Here the ergodic limit is essential, because it kills off the osci ...
Bulk Locality and Quantum Error Correction in AdS/CFT arXiv
... x but x is not contained in WC [A ∩ B]. For a CFT operator defined with support only on A to really be equal to a CFT operator defined with support only on B, it must be that the operator really only has support on A ∩ B. But given that we have chosen x to lie outside of WC [A ∩ B], we do not expect ...
... x but x is not contained in WC [A ∩ B]. For a CFT operator defined with support only on A to really be equal to a CFT operator defined with support only on B, it must be that the operator really only has support on A ∩ B. But given that we have chosen x to lie outside of WC [A ∩ B], we do not expect ...
Tailoring Quantum Architectures to Implementation Style: A
... difficult and will take about 1 ms because of the weak magnetic dipole-dipole interaction. During the 2-qubit operation, the operand qubits will share the same opzone and will be situated in close proximity to one another to support the spin interaction needed for quantum operation. During 2-qubit o ...
... difficult and will take about 1 ms because of the weak magnetic dipole-dipole interaction. During the 2-qubit operation, the operand qubits will share the same opzone and will be situated in close proximity to one another to support the spin interaction needed for quantum operation. During 2-qubit o ...
Chapter 3: Quantum Computing
... except an upper bound is imposed on both the intensity to do the sensing (which again is an arbitrarily small multiplicative factor of the input intensity) whether or not the obstructing body is present. A quantum optical method for IFS (but not IFM) may be used to do I/O with bandwidth reduced by a ...
... except an upper bound is imposed on both the intensity to do the sensing (which again is an arbitrarily small multiplicative factor of the input intensity) whether or not the obstructing body is present. A quantum optical method for IFS (but not IFM) may be used to do I/O with bandwidth reduced by a ...
Quantum Information Chapter 10. Quantum Shannon Theory
... Before we can understand Von Neumann entropy and its relevance to quantum information, we should discuss Shannon entropy and its relevance to classical information. Claude Shannon established the two core results of classical information theory in his landmark 1948 paper. The two central problems th ...
... Before we can understand Von Neumann entropy and its relevance to quantum information, we should discuss Shannon entropy and its relevance to classical information. Claude Shannon established the two core results of classical information theory in his landmark 1948 paper. The two central problems th ...