Triple to quintuple quantum dots for making multiple qubits
... To date various types of spin qubits have been developed with quantum dots including spin-1/2, singlet-triplet and exchange-only qubits. We have used a micro-magnet technique to make two spin-1/2 qubits and an entangling gate with a double quantum dot. The necessary step for further scaling up the q ...
... To date various types of spin qubits have been developed with quantum dots including spin-1/2, singlet-triplet and exchange-only qubits. We have used a micro-magnet technique to make two spin-1/2 qubits and an entangling gate with a double quantum dot. The necessary step for further scaling up the q ...
A Rough Guide to Quantum Chaos
... of position and momentum can exhibit chaotic features. In the absence of such features the system is said to be regular or integrable. Quantum mechanical systems are not represented by points in phase space but, rather, by vectors in Hilbert spaces. The time evolution of these vectors is governed by ...
... of position and momentum can exhibit chaotic features. In the absence of such features the system is said to be regular or integrable. Quantum mechanical systems are not represented by points in phase space but, rather, by vectors in Hilbert spaces. The time evolution of these vectors is governed by ...
The Density Operator
... two-component systems entails that S1 has property O only from the point of view of S2 . In addition, if we couple S1 not with S2 but with, say, S3 , the bi-orthogonal decomposition of the state vector for this new compound will not choose the set of y ’s as an orthonormal basis in H1, and this rein ...
... two-component systems entails that S1 has property O only from the point of view of S2 . In addition, if we couple S1 not with S2 but with, say, S3 , the bi-orthogonal decomposition of the state vector for this new compound will not choose the set of y ’s as an orthonormal basis in H1, and this rein ...
On Quantum Generalizations of Information
... the matter of incompatibility. Two systems are incompatible whenever they are correlated and can therefore not be treated independently. Mathematically, this is the case when the systems’ operators A, B do not commute, that is AB 6= BA. Another way of making this obvious is to compare A’s and B’s ei ...
... the matter of incompatibility. Two systems are incompatible whenever they are correlated and can therefore not be treated independently. Mathematically, this is the case when the systems’ operators A, B do not commute, that is AB 6= BA. Another way of making this obvious is to compare A’s and B’s ei ...
Quantum cryptography
... •We call them particles in spite of the fact that some of their properties are totally unlike the properties of what we call particles in our ordinary classical world. For example, a quantum particle can go through two places at the same time and can interact with itself. Because of that quantum phy ...
... •We call them particles in spite of the fact that some of their properties are totally unlike the properties of what we call particles in our ordinary classical world. For example, a quantum particle can go through two places at the same time and can interact with itself. Because of that quantum phy ...
0321813545_07_final
... Electron interference patterns occur even when the electrons go through the double slits singly and cannot interact with each other. Students have a hard time visualizing what the wavelength of a particle means. Students are misled by the probabilistic nature of quantum mechanics in much the ...
... Electron interference patterns occur even when the electrons go through the double slits singly and cannot interact with each other. Students have a hard time visualizing what the wavelength of a particle means. Students are misled by the probabilistic nature of quantum mechanics in much the ...
Quantum Leaps in Philosophy of Mind
... analogous ones associated with other “agents”, as the “other contributors” to the determination of the flow of actual Process 1 events. These realities, once created, as parts of streams of consciousness, are, at least in principle, available to help do the task that the evolving physical state seem ...
... analogous ones associated with other “agents”, as the “other contributors” to the determination of the flow of actual Process 1 events. These realities, once created, as parts of streams of consciousness, are, at least in principle, available to help do the task that the evolving physical state seem ...
Preparation of Papers in Two-Column Format for the
... lead to the evolution of the latter one. And the answer that follows is that although a classical computer can theoretically simulate a quantum computer, it is incredibly inefficient, so much so that a classical computer is effectively incapable of performing many tasks that a quantum computer could ...
... lead to the evolution of the latter one. And the answer that follows is that although a classical computer can theoretically simulate a quantum computer, it is incredibly inefficient, so much so that a classical computer is effectively incapable of performing many tasks that a quantum computer could ...
Document
... A classical molecular dynamics simulation should be fine, since electronic effects are unlikely to play a role in the mechanical energy transfer. We choose MD because we will want to study dynamical behavior. b) Band gap as a function of diameter, crystal growth direction, and surface termination of ...
... A classical molecular dynamics simulation should be fine, since electronic effects are unlikely to play a role in the mechanical energy transfer. We choose MD because we will want to study dynamical behavior. b) Band gap as a function of diameter, crystal growth direction, and surface termination of ...
Revisiting a Limit on Efficient Quantum Computation Tarsem S. Purewal Jr. ABSTRACT
... transitions are associated with amplitudes, rather than probabilities. In the most general setting, we allow the amplitudes to be efficiently computable complex numbers1 . As in the probabilistic model, the amplitude associated with a particular configuration in the tree is the product of the transi ...
... transitions are associated with amplitudes, rather than probabilities. In the most general setting, we allow the amplitudes to be efficiently computable complex numbers1 . As in the probabilistic model, the amplitude associated with a particular configuration in the tree is the product of the transi ...
Quantum teleportation
Quantum teleportation is a process by which quantum information (e.g. the exact state of an atom or photon) can be transmitted (exactly, in principle) from one location to another, with the help of classical communication and previously shared quantum entanglement between the sending and receiving location. Because it depends on classical communication, which can proceed no faster than the speed of light, it cannot be used for faster-than-light transport or communication of classical bits. It also cannot be used to make copies of a system, as this violates the no-cloning theorem. While it has proven possible to teleport one or more qubits of information between two (entangled) atoms, this has not yet been achieved between molecules or anything larger.Although the name is inspired by the teleportation commonly used in fiction, there is no relationship outside the name, because quantum teleportation concerns only the transfer of information. Quantum teleportation is not a form of transportation, but of communication; it provides a way of transporting a qubit from one location to another, without having to move a physical particle along with it.The seminal paper first expounding the idea was published by C. H. Bennett, G. Brassard, C. Crépeau, R. Jozsa, A. Peres and W. K. Wootters in 1993. Since then, quantum teleportation was first realized with single photons and later demonstrated with various material systems such as atoms, ions, electrons and superconducting circuits. The record distance for quantum teleportation is 143 km (89 mi).