Parallel algorithms for 3D Reconstruction of Asymmetric
... quantum computers. 1982 - Peter Beniof develops quantum mechanical models of Turing machines. ...
... quantum computers. 1982 - Peter Beniof develops quantum mechanical models of Turing machines. ...
Quantum structures in general relativistic theories
... 1. Minkowski spacetime is topologically trivial, hence there exists a unique equivalence class of quantum structures, namely the trivial one. 2. Schwartzschild spacetime has the topology of IR × (IR3 \ {0}), hence it is simply connected. Being F = 0, there exists only the equivalence class of the tr ...
... 1. Minkowski spacetime is topologically trivial, hence there exists a unique equivalence class of quantum structures, namely the trivial one. 2. Schwartzschild spacetime has the topology of IR × (IR3 \ {0}), hence it is simply connected. Being F = 0, there exists only the equivalence class of the tr ...
Qunatum extractors and the quantum entropy difference problem
... entanglement of bipartite pure states Equivalent problem: Given on AB, specified by a circuit, estimate the entanglement between the two systems ...
... entanglement of bipartite pure states Equivalent problem: Given on AB, specified by a circuit, estimate the entanglement between the two systems ...
Titles and Abstracts
... transgression ideas, and provide explicit examples with physical significance. Eyal Subag (Technion-Israel Institute of Technology, Israel) Title: Contraction of so(n) representations via the Gelfand-Tsetlin bases Abstract: We realize any skew-Hermitian integrable representation of iso(n-1) as a con ...
... transgression ideas, and provide explicit examples with physical significance. Eyal Subag (Technion-Israel Institute of Technology, Israel) Title: Contraction of so(n) representations via the Gelfand-Tsetlin bases Abstract: We realize any skew-Hermitian integrable representation of iso(n-1) as a con ...
final exam kérdések: 1.)There are n photons in a cavity composed of
... b. Energy of single photons in the corresponding cavity modes are E = … eV c. if n1 photons are in the f1 PHz mode and n2 photons are in the f2 PHz mode then the total electromagnetic energy in the cavity is E = … eV d. if all photons are in the f1 PHz mode then the total energy in the cavity is Eto ...
... b. Energy of single photons in the corresponding cavity modes are E = … eV c. if n1 photons are in the f1 PHz mode and n2 photons are in the f2 PHz mode then the total electromagnetic energy in the cavity is E = … eV d. if all photons are in the f1 PHz mode then the total energy in the cavity is Eto ...
Quantum-information transport to multiple receivers
... suffices to find the state adiabatically connected to Alice’s site at t = 0, i.e., 兩⌿共t = 0兲典 = 兩典A. If ⍀B2共t兲 = 0 " t, 兩1典 is adiabatically connected to 兩⌿共t = 0兲典 and the qubit is transferred from 兩典A to 兩典B1. If ⍀B1共t兲 = 0 " t, then 兩2典 is adiabatically connected to 兩典A, and the qubit trans ...
... suffices to find the state adiabatically connected to Alice’s site at t = 0, i.e., 兩⌿共t = 0兲典 = 兩典A. If ⍀B2共t兲 = 0 " t, 兩1典 is adiabatically connected to 兩⌿共t = 0兲典 and the qubit is transferred from 兩典A to 兩典B1. If ⍀B1共t兲 = 0 " t, then 兩2典 is adiabatically connected to 兩典A, and the qubit trans ...
Topics in Quantum Information Theory
... Because the answers can now depend on what the interviewer is asking the other person. Alice and Bob can agree that they should give opposite answers if both are asked the S question and otherwise they should give the same answer. For many Alices and Bobs this gives < B >= 4 ≥ 2. Alice and Bob can h ...
... Because the answers can now depend on what the interviewer is asking the other person. Alice and Bob can agree that they should give opposite answers if both are asked the S question and otherwise they should give the same answer. For many Alices and Bobs this gives < B >= 4 ≥ 2. Alice and Bob can h ...
Quantum Information—S. Lloyd, L. Levitov, T. Orlando, J. H. Shapiro, N.C. Wong
... Lin Tian, William Kaminsky, Aram Harrow Superconducting systems present a variety of opportunities for quantum information processing. In collaboration with Delft Institute of Technology, we have demonstrated the first macroscopic quantum superposition of circulating supercurrents, and have designed ...
... Lin Tian, William Kaminsky, Aram Harrow Superconducting systems present a variety of opportunities for quantum information processing. In collaboration with Delft Institute of Technology, we have demonstrated the first macroscopic quantum superposition of circulating supercurrents, and have designed ...
Quantum Physics
... metastable state – state where stimulated emission lifetime is longer than spontaneous emission lifetime, state where stimulated emission is more likely than spontaneous emission population inversion – when there are more atoms in state 2 than in state 1, a necessary condition for continued lasing s ...
... metastable state – state where stimulated emission lifetime is longer than spontaneous emission lifetime, state where stimulated emission is more likely than spontaneous emission population inversion – when there are more atoms in state 2 than in state 1, a necessary condition for continued lasing s ...
Quantum key distribution
Quantum key distribution (QKD) uses quantum mechanics to guarantee secure communication. It enables two parties to produce a shared random secret key known only to them, which can then be used to encrypt and decrypt messages. It is often incorrectly called quantum cryptography, as it is the most well known example of the group of quantum cryptographic tasks.An important and unique property of quantum key distribution is the ability of the two communicating users to detect the presence of any third party trying to gain knowledge of the key. This results from a fundamental aspect of quantum mechanics: the process of measuring a quantum system in general disturbs the system. A third party trying to eavesdrop on the key must in some way measure it, thus introducing detectable anomalies. By using quantum superpositions or quantum entanglement and transmitting information in quantum states, a communication system can be implemented which detects eavesdropping. If the level of eavesdropping is below a certain threshold, a key can be produced that is guaranteed to be secure (i.e. the eavesdropper has no information about it), otherwise no secure key is possible and communication is aborted.The security of encryption that uses quantum key distribution relies on the foundations of quantum mechanics, in contrast to traditional public key cryptography which relies on the computational difficulty of certain mathematical functions, and cannot provide any indication of eavesdropping at any point in the communication process, or any mathematical proof as to the actual complexity of reversing the one-way functions used. QKD has provable security based on information theory, and forward secrecy.Quantum key distribution is only used to produce and distribute a key, not to transmit any message data. This key can then be used with any chosen encryption algorithm to encrypt (and decrypt) a message, which can then be transmitted over a standard communication channel. The algorithm most commonly associated with QKD is the one-time pad, as it is provably secure when used with a secret, random key. In real world situations, it is often also used with encryption using symmetric key algorithms like the Advanced Encryption Standard algorithm. In the case of QKD this comparison is based on the assumption of perfect single-photon sources and detectors, that cannot be easily implemented.