Introduction To Quantum Computing
... Our entire discussion so far has been on “perfect” quantum gates, but of course they are not perfect. Various “threshold theorems” have suggested that we need 10^4 to 10^6 gates in less than the decoherence time in order to apply quantum error correction (QEC). QEC is a big enough topic to warrant s ...
... Our entire discussion so far has been on “perfect” quantum gates, but of course they are not perfect. Various “threshold theorems” have suggested that we need 10^4 to 10^6 gates in less than the decoherence time in order to apply quantum error correction (QEC). QEC is a big enough topic to warrant s ...
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... The state space of an isolated physical system evolves under the action of a unitary operator. In other words, if |ψi is the state at time t1 and |ψ 0 i is the state at time t2 , then there exists a unitary operator Ut1 ,t2 that maps |ψi to |ψ 0 i. The unitary operator can thus be viewed as acting i ...
... The state space of an isolated physical system evolves under the action of a unitary operator. In other words, if |ψi is the state at time t1 and |ψ 0 i is the state at time t2 , then there exists a unitary operator Ut1 ,t2 that maps |ψi to |ψ 0 i. The unitary operator can thus be viewed as acting i ...
Dissipative decoherence in the Grover algorithm
... static energy shifts of individual qubits which may generate many-body quantum chaos in a quantum computer hardware [11]. This second type of errors, e.g. static imperfections, gives a more rapid decay of fidelity as it has been shown in [12,10]. In the case of quantum algorithms for a complex dynam ...
... static energy shifts of individual qubits which may generate many-body quantum chaos in a quantum computer hardware [11]. This second type of errors, e.g. static imperfections, gives a more rapid decay of fidelity as it has been shown in [12,10]. In the case of quantum algorithms for a complex dynam ...
Executive Summary Last modified October 13
... evolves according to the application of stochastic matrices, which preserve that the probabilities add up to one (i.e., preserve the L1 norm). In quantum computation, on the other hand, allowed operations are unitary matrices, which are effectively rotations (they preserve that the sum of the square ...
... evolves according to the application of stochastic matrices, which preserve that the probabilities add up to one (i.e., preserve the L1 norm). In quantum computation, on the other hand, allowed operations are unitary matrices, which are effectively rotations (they preserve that the sum of the square ...
III. Quantum Model of the Atom
... defines probability of finding an eTake it easy, do not get shocked, we will cover this in Chemy 333, if you are a chemistry major student ...
... defines probability of finding an eTake it easy, do not get shocked, we will cover this in Chemy 333, if you are a chemistry major student ...
slides
... …I would like to say a few words about the soundness of our Modellvorstellungen. The difficulties that obtrude ever more clearly into atomic physics appear to me to lie less in an immoderate application of the quantum theory and much more in a perhaps ...
... …I would like to say a few words about the soundness of our Modellvorstellungen. The difficulties that obtrude ever more clearly into atomic physics appear to me to lie less in an immoderate application of the quantum theory and much more in a perhaps ...
Diagonalization vs. Decoherence
... appears to have “classical” (non-quantum) properties and behaves like an ensemble of states (does not appear to exhibit superposition). * •Decoherence occurs through the irreversible interaction of the quantum state with the environment, “leaking” information about the state into the environment, so ...
... appears to have “classical” (non-quantum) properties and behaves like an ensemble of states (does not appear to exhibit superposition). * •Decoherence occurs through the irreversible interaction of the quantum state with the environment, “leaking” information about the state into the environment, so ...
Quantum Computing
... atom. An excited state representing |1> and a ground state representing |0>. Light pulse of ...
... atom. An excited state representing |1> and a ground state representing |0>. Light pulse of ...
Why the brain is probably not a quantum computer Max Tegmark
... the entropy of the total system, and the logarithms are base 2. If this mutual information is zero, then the states of the two systems are uncorrelated and independent, with the density matrix of the separable form q q1 q2 . If the subsystems start out independent, any interaction will at least ...
... the entropy of the total system, and the logarithms are base 2. If this mutual information is zero, then the states of the two systems are uncorrelated and independent, with the density matrix of the separable form q q1 q2 . If the subsystems start out independent, any interaction will at least ...
qm2 - Michael Nielsen
... is that it provides a convenient tool with which to describe projectors, and thus quantum measurements. Recall: The projector P onto sp e1 , e2 acts as P e1 e2 e3 e1 e2 This gives us a simple explicit formula for P , since e1 e1 e2 e2 e1 e2 e3 e1 e ...
... is that it provides a convenient tool with which to describe projectors, and thus quantum measurements. Recall: The projector P onto sp e1 , e2 acts as P e1 e2 e3 e1 e2 This gives us a simple explicit formula for P , since e1 e1 e2 e2 e1 e2 e3 e1 e ...
Quantum Computing
... instead of the laws of classical physics. 1985 - David Deutsch developed the quantum turing machine, showing that quantum circuits are universal. 1994 - Peter Shor came up with a quantum algorithm to factor very large numbers in polynomial time. 1997 - Lov Grover develops a quantum search algo ...
... instead of the laws of classical physics. 1985 - David Deutsch developed the quantum turing machine, showing that quantum circuits are universal. 1994 - Peter Shor came up with a quantum algorithm to factor very large numbers in polynomial time. 1997 - Lov Grover develops a quantum search algo ...
