Time-Space Efficient Simulations of Quantum Computations
... a mechanism to support random access; our quantum model should also have such a mechanism. Intermediate measurements. Unlike the previous two issues, intermediate measurements are specific to the quantum setting. In time-bounded quantum computations, it is customary to assume that all measurements o ...
... a mechanism to support random access; our quantum model should also have such a mechanism. Intermediate measurements. Unlike the previous two issues, intermediate measurements are specific to the quantum setting. In time-bounded quantum computations, it is customary to assume that all measurements o ...
Supercurrent through a multilevel quantum dot - FU Berlin
... field B is used to tune the energy difference of singlet and triplet spin configurations. Attaching this geometry to BCS source and drain leads with gap and phase difference φ gives rise to an equilibrium supercurrent J . To compute J in the presence of Coulomb interactions U between the dot elect ...
... field B is used to tune the energy difference of singlet and triplet spin configurations. Attaching this geometry to BCS source and drain leads with gap and phase difference φ gives rise to an equilibrium supercurrent J . To compute J in the presence of Coulomb interactions U between the dot elect ...
full text
... Monodromy prevents defining the global second quantum number for the entire lattice of quantum states of the spherical pendulum system. Using the elementary cell continuation method in Sec. I C. we can of course define smooth sequences of states, but we will fail when we try to extend them to the wh ...
... Monodromy prevents defining the global second quantum number for the entire lattice of quantum states of the spherical pendulum system. Using the elementary cell continuation method in Sec. I C. we can of course define smooth sequences of states, but we will fail when we try to extend them to the wh ...
Exact quantum query complexity
... EXACT2 on 3 bits. For the other functions on 3 bits (x1 ∧ (x2 ∨ x3 ) and (x1 ∧ x2 ) ∨ (x¯1 ∧ x¯2 ∧ x3 )) we also found explicit exact quantum query algorithms. This was via a somewhat painful process of manually rounding real-valued solutions to the SDP to produce rational, exact solutions. But coul ...
... EXACT2 on 3 bits. For the other functions on 3 bits (x1 ∧ (x2 ∨ x3 ) and (x1 ∧ x2 ) ∨ (x¯1 ∧ x¯2 ∧ x3 )) we also found explicit exact quantum query algorithms. This was via a somewhat painful process of manually rounding real-valued solutions to the SDP to produce rational, exact solutions. But coul ...
How to reuse a one-time pad and other notes on... of quantum information
... view of key recycling. Namely, we imagine that Eve may know exactly what state is being sent. However, as in 关4兴 we will assume that Eve has not already managed to acquire part of the state 关16兴. We will then see that Eve cannot learn too much about the private key because she cannot access all the ...
... view of key recycling. Namely, we imagine that Eve may know exactly what state is being sent. However, as in 关4兴 we will assume that Eve has not already managed to acquire part of the state 关16兴. We will then see that Eve cannot learn too much about the private key because she cannot access all the ...
Chapter 6 Quantum Computation
... (once a suitable example is in hand) regardless of whether the answer is YES or NO. It is believed (though not proved) that NP 6= co−NP . (For example, we can show that a graph has a Hamiltonian path by exhibiting an example, but we don’t know how to show that it has no Hamiltonian path that way!) A ...
... (once a suitable example is in hand) regardless of whether the answer is YES or NO. It is believed (though not proved) that NP 6= co−NP . (For example, we can show that a graph has a Hamiltonian path by exhibiting an example, but we don’t know how to show that it has no Hamiltonian path that way!) A ...
FEYNMANWS PATH INTEGRAL APPROACH TO QUANTUM FIELD
... In spite of this, there doesn’t appear to be much physics in the propagator at …rst glance. It has a certain super…cial charm in the fact that its square gives you the probability that a particle will go from here to there (possibly via an in…nite number of intermediate points), but that’s about it. ...
... In spite of this, there doesn’t appear to be much physics in the propagator at …rst glance. It has a certain super…cial charm in the fact that its square gives you the probability that a particle will go from here to there (possibly via an in…nite number of intermediate points), but that’s about it. ...
EXPONENTIAL SEPARATION OF QUANTUM AND CLASSICAL
... messages according to a shared protocol, until Bob has sufficient information to announce an output z ∈ Z s.t. (x, y, z) ∈ R. The communication cost of a protocol is the sum of the lengths of messages (in bits) Alice and Bob exchange on the worst-case choice of inputs x and y. The communication comp ...
... messages according to a shared protocol, until Bob has sufficient information to announce an output z ∈ Z s.t. (x, y, z) ∈ R. The communication cost of a protocol is the sum of the lengths of messages (in bits) Alice and Bob exchange on the worst-case choice of inputs x and y. The communication comp ...