College 10: Quantum computing
... With this strategy, Alice and Bob win with a probability > 0.8 !! ...
... With this strategy, Alice and Bob win with a probability > 0.8 !! ...
Probing quantum mechanics towards the everyday world: where do we stand?
... helium atoms, with disconnectivity no more than about 30. Very recently, the Vienna group has made [9] a spectacular advance on this front by demonstrating the diffraction of C-60 molecules,a case which corresponds to a disconnectivity of more than a thousand. Two particularly interesting features of ...
... helium atoms, with disconnectivity no more than about 30. Very recently, the Vienna group has made [9] a spectacular advance on this front by demonstrating the diffraction of C-60 molecules,a case which corresponds to a disconnectivity of more than a thousand. Two particularly interesting features of ...
SINGLE-PHOTON ANNIHILATION AND ELECTRON-PAIR
... conservation law. It is, however, easy to check that the momentum conservation law is observed for the processes (1) in a dispersive medium with refractive index n ( w) < 1: ...
... conservation law. It is, however, easy to check that the momentum conservation law is observed for the processes (1) in a dispersive medium with refractive index n ( w) < 1: ...
Quantum one-time programs
... can be inferred from f (x). One-time programs cannot be achieved by software alone, as any classical software can be re-run. Thus, any hope of achieving any one-time property must necessarily rely on an additional assumptions such as secure hardware or quantum mechanics: computational assumptions al ...
... can be inferred from f (x). One-time programs cannot be achieved by software alone, as any classical software can be re-run. Thus, any hope of achieving any one-time property must necessarily rely on an additional assumptions such as secure hardware or quantum mechanics: computational assumptions al ...
High performance quantum computing
... to run a quantum algorithm, the mainframe can be configured to assign resources dynamically. If one user requires a large number of logical qubits and if the mainframe load is low, then the host can adjust to allocate a larger partition of the overall lattice to one individual user. While the user/m ...
... to run a quantum algorithm, the mainframe can be configured to assign resources dynamically. If one user requires a large number of logical qubits and if the mainframe load is low, then the host can adjust to allocate a larger partition of the overall lattice to one individual user. While the user/m ...
Remote Access - York Technical College
... Process of encoding data using a mathematical algorithm that makes it difficult for unauthorized users to read the data if they intercept it. Encryption requires a key (math. Algorithm) to read the data. Two types of encryption ...
... Process of encoding data using a mathematical algorithm that makes it difficult for unauthorized users to read the data if they intercept it. Encryption requires a key (math. Algorithm) to read the data. Two types of encryption ...
Quantum Postulates “Mastery of Fundamentals” Questions CH351
... are single-valued, continuous and finite. 3. Why do we say the wavefunction completely specifies the state of a system? How do we use the wavefunction? We mean that any physically observable quantity is determined, although perhaps probabilistically, by the wavefunction alone. The wavefunction is us ...
... are single-valued, continuous and finite. 3. Why do we say the wavefunction completely specifies the state of a system? How do we use the wavefunction? We mean that any physically observable quantity is determined, although perhaps probabilistically, by the wavefunction alone. The wavefunction is us ...
Simulating large quantum circuits on a small quantum computer
... measure all output qubits in the standard basis, get bits yi measure each remaining qubit in a random Pauli basis, get ti = ±1 ...
... measure all output qubits in the standard basis, get bits yi measure each remaining qubit in a random Pauli basis, get ti = ±1 ...
Spacetime Memory: Phase-Locked Geometric - Philsci
... In the holonomic approach to information processing geometric phases serve as the carrier of physical information. In this case geometric phases are the primordial memory of orientation given by a path integral measure of curvature on S 2 = SU (2)/U (1), where the coupling of intrinsic spin with rot ...
... In the holonomic approach to information processing geometric phases serve as the carrier of physical information. In this case geometric phases are the primordial memory of orientation given by a path integral measure of curvature on S 2 = SU (2)/U (1), where the coupling of intrinsic spin with rot ...
Observation of the Pairing Gap in a Strongly Interacting Quantum... Fermionic Atoms
... Johannes Hecker Denschlagb , and Rudolf Grimmb a b ...
... Johannes Hecker Denschlagb , and Rudolf Grimmb a b ...
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.