generalized numerical ranges and quantum error correction
... range of infinite dimensional operators. First, many quantum mechanical phenomena are better described using infinite dimensional Hilbert spaces. Also, a practical quantum computer must be able to handle a large number of qubits so that the underlying Hilbert space must have a very large dimension. ...
... range of infinite dimensional operators. First, many quantum mechanical phenomena are better described using infinite dimensional Hilbert spaces. Also, a practical quantum computer must be able to handle a large number of qubits so that the underlying Hilbert space must have a very large dimension. ...
Haag`s Theorem in Renormalisable Quantum Field Theories
... What to make of it But in the light of the above-mentioned success of quantum field theories, the question about what to make of it is unavoidable. People found different answers. On the physics side, the no-go results were widely ignored (apart from a few exceptions) or misunderstood and belittled ...
... What to make of it But in the light of the above-mentioned success of quantum field theories, the question about what to make of it is unavoidable. People found different answers. On the physics side, the no-go results were widely ignored (apart from a few exceptions) or misunderstood and belittled ...
From optimal state estimation to efficient quantum algorithms
... • Express the states in terms of an average-case algebraic problem (e.g., subset sum for dihedral HSP) • Perform the pretty good measurement on k copies of the states: - Choose k large enough that the measurement succeeds with reasonably high probability (this happens if the average-case problem typ ...
... • Express the states in terms of an average-case algebraic problem (e.g., subset sum for dihedral HSP) • Perform the pretty good measurement on k copies of the states: - Choose k large enough that the measurement succeeds with reasonably high probability (this happens if the average-case problem typ ...
Switching via quantum activation: A parametrically modulated oscillator 兲
... oscillator was studied experimentally for electrons in Penning traps 关35,36兴. The measured switching rate 关36兴 agreed quantitatively with the theory 关37兴. A quantum parametric oscillator also does not have detailed balance in the general case. The results presented below show that breaking the speci ...
... oscillator was studied experimentally for electrons in Penning traps 关35,36兴. The measured switching rate 关36兴 agreed quantitatively with the theory 关37兴. A quantum parametric oscillator also does not have detailed balance in the general case. The results presented below show that breaking the speci ...
Spin-valley lifetimes in a silicon quantum dot with tunable valley
... exceeds the VS. The red data in Fig. 2d illustrate the situation where inequality (1) only holds for Bo2.8 T. When EZ ¼ EVS (that is, for B ¼ 2.8 T), a spike in the relaxation rate occurs. Relaxation hot-spots have been previously predicted to occur for spin relaxation involving orbital states in si ...
... exceeds the VS. The red data in Fig. 2d illustrate the situation where inequality (1) only holds for Bo2.8 T. When EZ ¼ EVS (that is, for B ¼ 2.8 T), a spike in the relaxation rate occurs. Relaxation hot-spots have been previously predicted to occur for spin relaxation involving orbital states in si ...
Fractional Quantum Hall Effect in Suspended
... Since at present there are no reliable Hall-bar measurements in SG, it is tempting to use the two-terminal conductance for extracting the components of the conductivity tensor σxx and σxy . However, the two-terminal conductance depends simultaneously on σxx , σxy and sample geometry, and thus ’decon ...
... Since at present there are no reliable Hall-bar measurements in SG, it is tempting to use the two-terminal conductance for extracting the components of the conductivity tensor σxx and σxy . However, the two-terminal conductance depends simultaneously on σxx , σxy and sample geometry, and thus ’decon ...
Stark effect on the exciton spectra of vertically coupled quantum dots
... through a strong deformation of the carrier wave functions. For vertically coupled quantum dots3 the electric field oriented in the growth direction leads to a redistribution of the carriers between the dots.4–8 Typical electric field applied for vertically coupled quantum dots is of the order of 20 ...
... through a strong deformation of the carrier wave functions. For vertically coupled quantum dots3 the electric field oriented in the growth direction leads to a redistribution of the carriers between the dots.4–8 Typical electric field applied for vertically coupled quantum dots is of the order of 20 ...
A statistical mechanics approach to the factorization problem
... Stochastic Monte Carlo methods have long been used to calculate thermal expectation values, as well as ground state properties, of statistical models. Depending on the model, and method, large systems can often be studied to high precision. Using cluster algorithms the critical temperature and other ...
... Stochastic Monte Carlo methods have long been used to calculate thermal expectation values, as well as ground state properties, of statistical models. Depending on the model, and method, large systems can often be studied to high precision. Using cluster algorithms the critical temperature and other ...
Technical Roadmap for Fault-Tolerant Quantum Computing
... A physical qubit does not hold its state indefinitely. It undergoes random bit-flips and loses its phase over time. This is called decoherence. To overcome this, physicists have come up with clever tricks for error correction, where the state of a logical qubit is encoded within several physical qub ...
... A physical qubit does not hold its state indefinitely. It undergoes random bit-flips and loses its phase over time. This is called decoherence. To overcome this, physicists have come up with clever tricks for error correction, where the state of a logical qubit is encoded within several physical qub ...
Specker`s Parable of the Over-protective Seer: A Road to
... In 1960, the mathematician Ernst Specker described a simple example of nonclassical correlations, the counterintuitive features of which he dramatized using a parable about a seer who sets an impossible prediction task to his daughter’s suitors. We revisit this example here, using it as an entrée t ...
... In 1960, the mathematician Ernst Specker described a simple example of nonclassical correlations, the counterintuitive features of which he dramatized using a parable about a seer who sets an impossible prediction task to his daughter’s suitors. We revisit this example here, using it as an entrée t ...
QUANTUM AND CLASSICAL STRONG DIRECT
... If T ≈ kt, then σ = 2−Ω(k) . Strong direct product theorems (SDPTs), though intuitively very plausible, are generally hard to prove and sometimes not even true. Shaltiel [Sha01] exhibits a general class of examples where SDPTs fail. This applies, for instance, to query complexity, communication comp ...
... If T ≈ kt, then σ = 2−Ω(k) . Strong direct product theorems (SDPTs), though intuitively very plausible, are generally hard to prove and sometimes not even true. Shaltiel [Sha01] exhibits a general class of examples where SDPTs fail. This applies, for instance, to query complexity, communication comp ...
IOSR Journal of Applied Physics (IOSR-JAP)
... of detectors which detect electromagnetic waves by converting them to corresponding electrical pulses. A frequency or wavelength splitter unit is important for the spectrometer to split the spectrum of the sample [9]. The spectrum of sample is displayed on the display unit screen as a wavelength (or ...
... of detectors which detect electromagnetic waves by converting them to corresponding electrical pulses. A frequency or wavelength splitter unit is important for the spectrometer to split the spectrum of the sample [9]. The spectrum of sample is displayed on the display unit screen as a wavelength (or ...
Including quantum effects in the dynamics of complex „i.e., large
... time-dependent Hartree 共MCTDH兲 approach. Though the idea 共of a multiconfiguration time-dependent self-consistent field approximation兲 was introduced and first applied earlier,18 it has been developed most effectively by the Heidelberg group.19 There are some limitations on the form of the Hamiltonia ...
... time-dependent Hartree 共MCTDH兲 approach. Though the idea 共of a multiconfiguration time-dependent self-consistent field approximation兲 was introduced and first applied earlier,18 it has been developed most effectively by the Heidelberg group.19 There are some limitations on the form of the Hamiltonia ...
Advances in Electromagnetic Theory
... Thirty years ago I put in a lot of effort to get accredited experts to outline the fundamentals of their theory. I finally prevailed on four high level administrators to select their top expert and instruct them to write to me. They were Pepper, McEwan, Mink and Secker. They contradicted each other, ...
... Thirty years ago I put in a lot of effort to get accredited experts to outline the fundamentals of their theory. I finally prevailed on four high level administrators to select their top expert and instruct them to write to me. They were Pepper, McEwan, Mink and Secker. They contradicted each other, ...
Exactly Solvable Quantum Field Theories: From
... Asymptotic Bethe Ansatz (ABA) Beisert,Eden,Staudacher ...
... Asymptotic Bethe Ansatz (ABA) Beisert,Eden,Staudacher ...
Eikonal Approximation K. V. Shajesh
... momentum and when the scattering angle is very small. In the language of differential equations, the main advantage the eikonal approximation offers is that the equations reduce to a differential equation in a single variable. This reduction into a single variable is the result of the straight line ...
... momentum and when the scattering angle is very small. In the language of differential equations, the main advantage the eikonal approximation offers is that the equations reduce to a differential equation in a single variable. This reduction into a single variable is the result of the straight line ...
