Disorder-induced order with ultra-cold atoms
... In order to study disorder effects, it is hugely beneficial and often indispensable to control the disordered quantity. In most solid states systems, however, disorder originates from noisy experimental parameters and is thus very difficult to control. In recent years, ultra-cold atomic gases have b ...
... In order to study disorder effects, it is hugely beneficial and often indispensable to control the disordered quantity. In most solid states systems, however, disorder originates from noisy experimental parameters and is thus very difficult to control. In recent years, ultra-cold atomic gases have b ...
Tailoring Quantum Architectures to Implementation Style: A
... to be physically proximate, QC architectures must be designed to efficiently transport a large number of operand qubits in order to maximize parallel execution. Previously proposed QC architectures have been designed for implementation technologies where communication costs are significantly greater ...
... to be physically proximate, QC architectures must be designed to efficiently transport a large number of operand qubits in order to maximize parallel execution. Previously proposed QC architectures have been designed for implementation technologies where communication costs are significantly greater ...
Measurements in Proof Nets as Higher
... Quantum Programming Languages. Quantum computation and quantum communication have been attracting growing attention. The former achieves real breakthrough in computational power—at least for some classes of problems, such as the integer factorization problem (Shor’s algorithm) and search problems. W ...
... Quantum Programming Languages. Quantum computation and quantum communication have been attracting growing attention. The former achieves real breakthrough in computational power—at least for some classes of problems, such as the integer factorization problem (Shor’s algorithm) and search problems. W ...
Fred Richman New Mexico State University, Las Cruces NM 88003
... have to contain either Antigone or an ancestor of Jocasta, so Oedipus would not be isolated in S . On the other hand it is easily seen that fJocastag is an hematic basis for Jocasta and Antigone. Indeed it is readily veri ed that p is a monohematic ancestor of q if and only if the set fpg is an hema ...
... have to contain either Antigone or an ancestor of Jocasta, so Oedipus would not be isolated in S . On the other hand it is easily seen that fJocastag is an hematic basis for Jocasta and Antigone. Indeed it is readily veri ed that p is a monohematic ancestor of q if and only if the set fpg is an hema ...
Macroscopic Quantum Tunneling in a Josephson Junction Coupled
... superconductors can be thought of as one large “molecule” which traverses the junction. The tunneling of f results in a phase slip (a sudden change of f by 2p) which is observed as a voltage spike, since V is proportional to df/dt. ...
... superconductors can be thought of as one large “molecule” which traverses the junction. The tunneling of f results in a phase slip (a sudden change of f by 2p) which is observed as a voltage spike, since V is proportional to df/dt. ...
Absorbance Spectroscopy and Beer`s Law
... Beer's las describes the absorption behavior only of dilute solutions and in this sense is a limiting law. At concentrations exceeding about 0.01 M, the average distance between ions or molecules of the absorbing species are diminished to the point where each particle affects the charge distribution ...
... Beer's las describes the absorption behavior only of dilute solutions and in this sense is a limiting law. At concentrations exceeding about 0.01 M, the average distance between ions or molecules of the absorbing species are diminished to the point where each particle affects the charge distribution ...
Postprint
... trains [3]. Understandably, the questions related to the role of the probe IR field on the photoelectron dynamics in streaking measurements have motivated several theoretical studies [7–13]; see also the earlier papers: [16–19]. Then, a natural issue arises which is to determine to what extent the “ ...
... trains [3]. Understandably, the questions related to the role of the probe IR field on the photoelectron dynamics in streaking measurements have motivated several theoretical studies [7–13]; see also the earlier papers: [16–19]. Then, a natural issue arises which is to determine to what extent the “ ...
Numerical Renormalization Group Study of Random Transverse
... quantum phase transition is much stronger than on classical systems at temperature driven phase transitions. As first observed by McCoy 1) in a somewhat disguised version of a random transverse Ising chain, non-conventional scaling and off-critical singularities that lead to divergent susceptibilities ...
... quantum phase transition is much stronger than on classical systems at temperature driven phase transitions. As first observed by McCoy 1) in a somewhat disguised version of a random transverse Ising chain, non-conventional scaling and off-critical singularities that lead to divergent susceptibilities ...
Quantum Sleeping Beauty
... “Today is Tuesday” at t1 and at t2, but she should assign a probability of 1 to both “I will wake up on Monday” and “I will wake up on Tuesday” at t0. Applying this to the many-worlds case, the (blindfolded) observer should assign a probability of 1/2 to both “The result is ‘up’ in this branch” and ...
... “Today is Tuesday” at t1 and at t2, but she should assign a probability of 1 to both “I will wake up on Monday” and “I will wake up on Tuesday” at t0. Applying this to the many-worlds case, the (blindfolded) observer should assign a probability of 1/2 to both “The result is ‘up’ in this branch” and ...
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.