Quantum Designs - Gerhard Zauner
... interpretations from the points of view of three well-known theories will be explored in the remaining sections of the first part of this article. The special case of mutually commuting projection matrices renders the definitions and structures of classical, combinatorial design theory. Next, we wil ...
... interpretations from the points of view of three well-known theories will be explored in the remaining sections of the first part of this article. The special case of mutually commuting projection matrices renders the definitions and structures of classical, combinatorial design theory. Next, we wil ...
What Makes a Classical Concept Classical? Toward a
... and the means of observation. This assumption is not only fully justified by all everyday experience but even constitutes the whole basis of classical physics. . . . As soon as we are dealing, however, with phenomena like individual atomic processes which, due to their very nature, are essentially d ...
... and the means of observation. This assumption is not only fully justified by all everyday experience but even constitutes the whole basis of classical physics. . . . As soon as we are dealing, however, with phenomena like individual atomic processes which, due to their very nature, are essentially d ...
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... as a single quantum gate per move; in a naive movement model, this quintuples the actual compute cost because of repeatedly moving qubits between SIMD regions and the global memory. In many cases our compiler can schedule QT operations in parallel with the computation steps. It should be noted that ...
... as a single quantum gate per move; in a naive movement model, this quintuples the actual compute cost because of repeatedly moving qubits between SIMD regions and the global memory. In many cases our compiler can schedule QT operations in parallel with the computation steps. It should be noted that ...
Mechanical quantum resonators A. N. Cleland and M. R. Geller
... resonator, qubit states prepared in a junction can be passed to the resonator and stored there, and can later be passed back to the original junction or transferred to another junction with high fidelity. The resonator can also be used to produce controlled entangled states between a pair of junctio ...
... resonator, qubit states prepared in a junction can be passed to the resonator and stored there, and can later be passed back to the original junction or transferred to another junction with high fidelity. The resonator can also be used to produce controlled entangled states between a pair of junctio ...
Decoherence of a Quantum Bit Circuit
... for the purpose of readout (see [12] and refs. therein). The device shown in Fig. 4 is a double dot in which the exchange interaction between the single electrons in the dots is controlled by the central gate voltage. The readout is performed by monitoring the charge of the dot with a quantum point ...
... for the purpose of readout (see [12] and refs. therein). The device shown in Fig. 4 is a double dot in which the exchange interaction between the single electrons in the dots is controlled by the central gate voltage. The readout is performed by monitoring the charge of the dot with a quantum point ...
Full-Text PDF
... would have evolved, had the ―tool‖ of modern nonequilibrium thermodynamics existed, say, a century ago. As has recently been shown, one can derive the exact Schrödinger equation with said tool, where the relation between energy E and frequency , respectively, is used as the only empirical input, E ...
... would have evolved, had the ―tool‖ of modern nonequilibrium thermodynamics existed, say, a century ago. As has recently been shown, one can derive the exact Schrödinger equation with said tool, where the relation between energy E and frequency , respectively, is used as the only empirical input, E ...
Kondo Model for the ‘‘0.7 Anomaly’’ in Transport through a... * Kenji Hirose, Yigal Meir, and Ned S. Wingreen
... The conductance through quantum point contacts (QPCs) is observed to be quantized in units of 2e2 =h [1,2]. In addition to these integer conductance steps, an extra conductance plateau around 0:72e2 =h has attracted considerable experimental effort [3–6] and drawn attention to the effects of elect ...
... The conductance through quantum point contacts (QPCs) is observed to be quantized in units of 2e2 =h [1,2]. In addition to these integer conductance steps, an extra conductance plateau around 0:72e2 =h has attracted considerable experimental effort [3–6] and drawn attention to the effects of elect ...
silicon in the quantum limit: quantum computing
... (b) The Deutsch algorithm takes only one run to answer the question of whether the function is constant or not, whereas a classical computer would need two. (c) Quantum teleportation uses a maximally entangled EPR pair to send an arbitrary quantum state between two parties. (d) Quantum states cannot ...
... (b) The Deutsch algorithm takes only one run to answer the question of whether the function is constant or not, whereas a classical computer would need two. (c) Quantum teleportation uses a maximally entangled EPR pair to send an arbitrary quantum state between two parties. (d) Quantum states cannot ...
Quantum Computing with Trapped Ion Hyperfine Qubits
... very large number of qubits. As the number of ions in a trap increases, several difficulties are encountered. For example, the addition of each ion adds three vibrational modes. It soon becomes nearly impossible to spectrally select the desired vibrational mode unless the speed of operations is slowe ...
... very large number of qubits. As the number of ions in a trap increases, several difficulties are encountered. For example, the addition of each ion adds three vibrational modes. It soon becomes nearly impossible to spectrally select the desired vibrational mode unless the speed of operations is slowe ...
Spin-to-orbital conversion of the angular momentum of light and its
... when an optical beam propagates along the optical axis of the crystal. This was first proved theoretically by Ciattoni et al [43, 44] and experimentally by Brasselet et al [45–47]. A similar phenomenon has been shown to occur in a biaxial crystal by internal conical diffraction [48, 49]. In contrast ...
... when an optical beam propagates along the optical axis of the crystal. This was first proved theoretically by Ciattoni et al [43, 44] and experimentally by Brasselet et al [45–47]. A similar phenomenon has been shown to occur in a biaxial crystal by internal conical diffraction [48, 49]. In contrast ...
PS - USTC, ICTS
... • For symmetric E-M tensor, the momentum density flow is the same as the energy density flow. For spin s=1/2 electron this will lead to a contradiction. The energy flow and momentum density flow should be different. A detaild analysis had been given in arXiv:1211.2360[gr-qc]. ...
... • For symmetric E-M tensor, the momentum density flow is the same as the energy density flow. For spin s=1/2 electron this will lead to a contradiction. The energy flow and momentum density flow should be different. A detaild analysis had been given in arXiv:1211.2360[gr-qc]. ...
ןב תטיסרבינוא - בגנב ןוירוג
... no effective way to inject a ≈ 100% spin-polarized current from an FM into an S. For this reason, we are interested in spin filters that avoid ferromagnets. Several proposed filters use quantum dots, in which the filtering is based on either the Coulomb blockade and the Pauli principle, 49–52 or on ...
... no effective way to inject a ≈ 100% spin-polarized current from an FM into an S. For this reason, we are interested in spin filters that avoid ferromagnets. Several proposed filters use quantum dots, in which the filtering is based on either the Coulomb blockade and the Pauli principle, 49–52 or on ...
Viscosity of a nucleonic fluid
... a universal factor with E EF . Accounting for this difference in nuclear systems is referred to as the Bertsch challenge problem [15]. Initial work on this problem was done by Barker [16] and latter Heiselberg [17]. A Monte Carlo numerical study of the unitary limit of pure neutron matter is g ...
... a universal factor with E EF . Accounting for this difference in nuclear systems is referred to as the Bertsch challenge problem [15]. Initial work on this problem was done by Barker [16] and latter Heiselberg [17]. A Monte Carlo numerical study of the unitary limit of pure neutron matter is g ...
Imaging electrostatically confined Dirac fermions in graphene
... hBN) is visible26,27 and the region is seen to be free of adsorbates. A dI /dVs map of the same region (Fig. 2c) reflects changes in the local density of states (LDOS) caused by the spatially varying charge density distribution. Since the p–n junction centre is stationary, we are able to move the ST ...
... hBN) is visible26,27 and the region is seen to be free of adsorbates. A dI /dVs map of the same region (Fig. 2c) reflects changes in the local density of states (LDOS) caused by the spatially varying charge density distribution. Since the p–n junction centre is stationary, we are able to move the ST ...
Bell's theorem
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Bell's theorem is a ‘no-go theorem’ that draws an important distinction between quantum mechanics (QM) and the world as described by classical mechanics. This theorem is named after John Stewart Bell.In its simplest form, Bell's theorem states:Cornell solid-state physicist David Mermin has described the appraisals of the importance of Bell's theorem in the physics community as ranging from ""indifference"" to ""wild extravagance"". Lawrence Berkeley particle physicist Henry Stapp declared: ""Bell's theorem is the most profound discovery of science.""Bell's theorem rules out local hidden variables as a viable explanation of quantum mechanics (though it still leaves the door open for non-local hidden variables). Bell concluded:Bell summarized one of the least popular ways to address the theorem, superdeterminism, in a 1985 BBC Radio interview: