609 citations · 4.2k across the 137 of their papers we have counts for
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Sequential measurements of non-commuting observables with quantum controlled interactions
Holger F. Hofmann
The origin of non-classical correlations is difficult to identify since the uncertainty principle requires that information obtained about one observable invariably results in the…
Direct observation of temporal coherence by weak projective measurements of photon arrival time
Holger F. Hofmann, Changliang Ren
We show that a weak projective measurement of photon arrival time can be realized by controllable two photon interferences with photons from short-time reference pulses at a polari…
Analysis of the time-energy entanglement of down-converted photon pairs by correlated single photon interference
Changliang Ren, Holger F. Hofmann
The time-energy entanglement of down-converted photon pairs is particularly difficult to characterize because direct measurements of photon arrival times are limited by the tempora…
Violation of Leggett-Garg inequalities in quantum measurements with variable resolution and back-action
Yutaro Suzuki, Masataka Iinuma, Holger F. Hofmann
Quantum mechanics violates Leggett-Garg inequalities because the operator formalism predicts correlations between different spin components that would correspond to negative joint…
Measurement uncertainties in the quantum formalism: quasi-realities of individual systems
Holger F. Hofmann
The evaluation of uncertainties in quantum measurements is problematic since the correct value of an observable between state preparation and measurement is experimentally inaccess…
Clock synchronization using maximal multipartite entanglement
Changliang Ren, Holger F. Hofmann
We propose a multi party quantum clock synchronization protocol that makes optimal use of the maximal multipartite entanglement of GHZ-type states. To realize the protocol, differe…
The quantum state should be interpreted statistically
Holger F. Hofmann
In a recent paper (arXiv:1111.3328), Pusey, Barrett and Rudolph claim to prove that statistical interpretations of quantum mechanics do not work. In fact, their proof assumes that…