The additivity problem in quantum information theory
... one has C() ≥ Cχ (). If the additivity (6) holds, then Cχ (⊗n ) = nCχ (), and this would imply C() = Cχ (). Such a result would be very much welcome from a mathematical point of view, giving a relatively easily computable “single-letter” expression for the classical capacity of a quantum chann ...
... one has C() ≥ Cχ (). If the additivity (6) holds, then Cχ (⊗n ) = nCχ (), and this would imply C() = Cχ (). Such a result would be very much welcome from a mathematical point of view, giving a relatively easily computable “single-letter” expression for the classical capacity of a quantum chann ...
A Mathematical Characterization of the Physical Structure of Observers
... the idea of patterns of switches; proposing conditions under which two different sets of sequences of quantum states are alternative manifestations of the same observer and then discussing the assignment of probabilities to such sets. In other words, this paper is initially concerned with an index s ...
... the idea of patterns of switches; proposing conditions under which two different sets of sequences of quantum states are alternative manifestations of the same observer and then discussing the assignment of probabilities to such sets. In other words, this paper is initially concerned with an index s ...
Coherent population trapping of an electron spin in a single
... The probe absorption spectra with various driving field and fixed probe Rabi frequencies are shown in Fig. 2b–f. The energy separation of the two peaks is increased by increasing the driving field intensity. As Ωd becomes larger than the trion transition linewidth, two Autler–Townes peaks with Loren ...
... The probe absorption spectra with various driving field and fixed probe Rabi frequencies are shown in Fig. 2b–f. The energy separation of the two peaks is increased by increasing the driving field intensity. As Ωd becomes larger than the trion transition linewidth, two Autler–Townes peaks with Loren ...
Pitkanen_03B
... If quantum jump occurs between 2 different time evolutions of Schrödinger equation (understood here in very metaphoral sense) rather than interfering with single deterministic Schrödinger evolution, the basic problem of quantum measurement theory finds a resolution. The interpretation of quantum jum ...
... If quantum jump occurs between 2 different time evolutions of Schrödinger equation (understood here in very metaphoral sense) rather than interfering with single deterministic Schrödinger evolution, the basic problem of quantum measurement theory finds a resolution. The interpretation of quantum jum ...
Document
... • The main enemy: decoherence – i.e. the quantum state (a microscopically encoded superposition of classical states) is measured by the macroscopic environment ...
... • The main enemy: decoherence – i.e. the quantum state (a microscopically encoded superposition of classical states) is measured by the macroscopic environment ...
QFT on curved spacetimes: axiomatic framework and applications
... precisely expressed by the German word Nahwirkungsprinzip. It states that each degree of freedom is influenced only by a relatively small number of other degrees of freedom. This induces a concept of neighborhoods in the set of degrees of freedom. The original motivation for developing QFT was to co ...
... precisely expressed by the German word Nahwirkungsprinzip. It states that each degree of freedom is influenced only by a relatively small number of other degrees of freedom. This induces a concept of neighborhoods in the set of degrees of freedom. The original motivation for developing QFT was to co ...
Quantum State Reconstruction From Incomplete Data
... Can we recover diluted information ? Can we derive a master equation? What is the role of quantum correlations in reservoir? ...
... Can we recover diluted information ? Can we derive a master equation? What is the role of quantum correlations in reservoir? ...
Applied Physics
... Measurement of wavelength of light by Fabry Perot Interferometer Understand how a Fabry-Perot Interferometer works and use it to observe the hyperfine splitting of spectral lines. or Assemble and align Fabry-Perot interferometer, and use it to measure differential wavelength for the Na doublet. Meas ...
... Measurement of wavelength of light by Fabry Perot Interferometer Understand how a Fabry-Perot Interferometer works and use it to observe the hyperfine splitting of spectral lines. or Assemble and align Fabry-Perot interferometer, and use it to measure differential wavelength for the Na doublet. Meas ...
Entangled State Quantum Cryptography
... unnoticed; more precisely, one can set rigid upper bounds on the possible information known to a potential eavesdropper, based on measured error rates, and then use appropriate methods of “privacy amplification” to reduce this information to an acceptable level [6]. Since its discovery, quantum cryp ...
... unnoticed; more precisely, one can set rigid upper bounds on the possible information known to a potential eavesdropper, based on measured error rates, and then use appropriate methods of “privacy amplification” to reduce this information to an acceptable level [6]. Since its discovery, quantum cryp ...
Publications
... J R Smith, J Degallaix, A Freise, H Grote, M Hewitson, S Hild, H Lück, K A Strain and B Willke Measurement and simulation of laser power noise in GEO 600 Classical and Quantum Gravity 25 No 3 (7 February 2008) 035003 (12pp) S Hild, H Grote, M Hewitson, H Lück, J R Smith, K A Strain, B Willke and K D ...
... J R Smith, J Degallaix, A Freise, H Grote, M Hewitson, S Hild, H Lück, K A Strain and B Willke Measurement and simulation of laser power noise in GEO 600 Classical and Quantum Gravity 25 No 3 (7 February 2008) 035003 (12pp) S Hild, H Grote, M Hewitson, H Lück, J R Smith, K A Strain, B Willke and K D ...
