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Notes on the reality of the quantum state
, 2014
"... Based on an analysis of protective measurements, we show that the quantum state represents the physical state of a single quantum system. This result is more definite than the PBR theorem [Pusey, Barrett, and Rudolph, Nature Phys. 8, 475 (2012)]. The physical meaning of the quantum state is an impor ..."
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Based on an analysis of protective measurements, we show that the quantum state represents the physical state of a single quantum system. This result is more definite than the PBR theorem [Pusey, Barrett, and Rudolph, Nature Phys. 8, 475 (2012)]. The physical meaning of the quantum state
Adiabatic quantum state generation
 SIAM JOURNAL ON COMPUTING
, 2007
"... The design of new quantum algorithms has proven to be an extremely difficult task. This paper considers a different approach to this task by studying the problem of quantum state generation. We motivate this problem by showing that the entire class of statistical zero knowledge, which contains natu ..."
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Cited by 9 (1 self)
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The design of new quantum algorithms has proven to be an extremely difficult task. This paper considers a different approach to this task by studying the problem of quantum state generation. We motivate this problem by showing that the entire class of statistical zero knowledge, which contains
The Quantum State of Inflationary Perturbations
"... Abstract. This article reviews the properties of the quantum state of inflationary perturbations. After a brief description of the inflationary background, the wavefunction of the MukhanovSasaki variable is calculated and shown to be that of a strongly squeezed state. The corresponding Wigner funct ..."
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Abstract. This article reviews the properties of the quantum state of inflationary perturbations. After a brief description of the inflationary background, the wavefunction of the MukhanovSasaki variable is calculated and shown to be that of a strongly squeezed state. The corresponding Wigner
ISOMETRIES OF QUANTUM STATES
, 2002
"... Abstract. This paper treats the isometries of metric spaces of quantum states. We consider two metrics on the set all quantum states, namely the Bures metric and the one which comes from the tracenorm. We describe all the corresponding (nonlinear) isometries and also present similar results concern ..."
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Abstract. This paper treats the isometries of metric spaces of quantum states. We consider two metrics on the set all quantum states, namely the Bures metric and the one which comes from the tracenorm. We describe all the corresponding (nonlinear) isometries and also present similar results
The learnability of quantum states
 quantph/0608142
, 2006
"... Traditional quantum state tomography requires a number of measurements that grows exponentially with the number of qubits n. But using ideas from computational learning theory, we show that “for most practical purposes ” one can learn a state using a number of measurements that grows only linearly w ..."
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Cited by 22 (2 self)
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Traditional quantum state tomography requires a number of measurements that grows exponentially with the number of qubits n. But using ideas from computational learning theory, we show that “for most practical purposes ” one can learn a state using a number of measurements that grows only linearly
Criteria for reachability of quantum states
, 2002
"... Abstract. We address the question of which quantum states can be interconverted under the action of a timedependent Hamiltonian. In particular, we consider the problem as applied to mixed states, and investigate the difference between pure and mixedstate controllability introduced in previous wor ..."
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Cited by 3 (0 self)
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Abstract. We address the question of which quantum states can be interconverted under the action of a timedependent Hamiltonian. In particular, we consider the problem as applied to mixed states, and investigate the difference between pure and mixedstate controllability introduced in previous
Quantum State Holography
"... reference wave function. For this purpose, we employ a sequence of two timedelayed laser pulses which subsequently excite the object and the reference wave packet in the excited molecular potential. This is similar to recently introduced technique of wavepacket crossinterferometry [9]. The total ..."
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incoherent fluorescence [10] of the excited molecule, which is recorded as the function of the delay time , serves as a hologram. We show that these data contain enough information to extract the full quantum state of the object wave packet. Moreover, we demonstrate the feasibility of quantum state
Nonclassicality of noisy quantum states
, 2005
"... Abstract. Nonclassicality conditions for an oscillatorlike system interacting with a hot thermal bath are considered. Nonclassical properties of quantum states can be conserved up to a certain temperature threshold only. In this case affection of the thermal noise can be compensated via transformat ..."
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Cited by 1 (0 self)
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Abstract. Nonclassicality conditions for an oscillatorlike system interacting with a hot thermal bath are considered. Nonclassical properties of quantum states can be conserved up to a certain temperature threshold only. In this case affection of the thermal noise can be compensated via
Remote preparation of quantum states
, 2005
"... Remote state preparation is the variant of quantum state teleportation in which the sender knows the quantum state to be communicated. The original paper introducing teleportation established minimal requirements for classical communication and entanglement but the corresponding limits for remote s ..."
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Cited by 24 (9 self)
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Remote state preparation is the variant of quantum state teleportation in which the sender knows the quantum state to be communicated. The original paper introducing teleportation established minimal requirements for classical communication and entanglement but the corresponding limits for remote
Results 11  20
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21,881