304 citations · 1.3k across the 27 of their papers we have counts for
22 papers · 1 filter
Active learning machine learns to create new quantum experiments
Alexey A. Melnikov, Hendrik Poulsen Nautrup, Mario Krenn +4
How useful can machine learning be in a quantum laboratory? Here we raise the question of the potential of intelligent machines in the context of scientific research. A major motiv…
Estimation of coherent error sources from stabilizer measurements
Davide Orsucci, Markus Tiersch, Hans J. Briegel
In the context of measurement-based quantum computation a way of maintaining the coherence of a graph state is to measure its stabilizer operators. Aside from performing quantum er…
Quantum walks on embedded hypercubes: Nonsymmetric and nonlocal cases
Adi Makmal, Markus Tiersch, Clemens Ganahl +1
The expected hitting time of discrete quantum walks on a hypercube (HC) is numerically known to be exponentially shorter than that of their classical analogs in terms of the scalin…
Adaptive quantum computation in changing environments using projective simulation
M. Tiersch, E. J. Ganahl, H. J. Briegel
Quantum information processing devices need to be robust and stable against external noise and internal imperfections to ensure correct operation. In a setting of measurement-based…
Entanglement of -LME states and the SAT problem
Adi Makmal, Markus Tiersch, Vedran Dunjko +1
In this paper we investigate the entanglement properties of the class of -locally maximally entanglable (-LME) states, which are also known as the "real equally weighted stat…
In-situ characterization of quantum devices with error correction
Joshua Combes, Christopher Ferrie, Chris Cesare +4
Syndrome measurements made in quantum error correction contain more information than is typically used. We show that the statistics of data from syndrome measurements can be used t…
Multiple re-encounter approach to radical pair reactions and the role of nonlinear master equations
Jens Clausen, Gian Giacomo Guerreschi, Markus Tiersch +1
We formulate a multiple-encounter model of the radical pair mechanism that is based on a random coupling of the radical pair to a minimal model environment. These occasional pulse-…
Quantum walks on embedded hypercubes
Adi Makmal, Manran Zhu, Daniel Manzano +2
It has been proved by Kempe that discrete quantum walks on the hypercube (HC) hit exponentially faster than the classical analog. The same was also observed numerically by Krovi an…
Many-particle interference beyond many-boson and many-fermion statistics
Malte C. Tichy, Markus Tiersch, Florian Mintert +1
Identical particles exhibit correlations even in the absence of inter-particle interaction, due to the exchange (anti)symmetry of the many-particle wavefunction. Two fermions obey…
Quantum statistical synchronization of non-interacting particles
Malte C. Tichy, Markus Tiersch, Fernando de Melo +2
A full treatment for the scattering of an arbitrary number of bosons through a Bell multiport beam splitter is presented that includes all possible output arrangements. Due to exch…
Quantum transport efficiency and Fourier's law
Daniel Manzano, Markus Tiersch, Ali Asadian +1
We analyze the steady-state energy transfer in a chain of coupled two-level systems connecting two thermal reservoirs. Through an analytic treatment we find that the energy current…
A critical view on transport and entanglement in models of photosynthesis
Markus Tiersch, Sandu Popescu, Hans J. Briegel
We revisit critically the recent claims, inspired by quantum optics and quantum information, that there is entanglement in the biological pigment protein complexes, and that it is…
Zero-Transmission Law for Multiport Beam Splitters
Malte Christopher Tichy, Markus Tiersch, Fernando de Melo +2
The Hong-Ou-Mandel effect is generalized to a configuration of n bosons prepared in the n input ports of a Bell multiport beam splitter. We derive a strict suppression law for most…
Motional effects on the efficiency of excitation transfer
Ali Asadian, Markus Tiersch, Gian Giacomo Guerreschi +3
Energy transfer plays a vital role in many natural and technological processes. In this work, we study the effects of mechanical motion on the excitation transfer through a chain o…
Equation of motion for entanglement
Markus Tiersch, Fernando de Melo, Thomas Konrad +1
We review an evolution equation for quantum entanglement for 2x2 dimensional quantum systems, the smallest system that can exhibit entanglement, and extend it to higher dimensional…
Detection and typicality of bound entangled states
Joonwoo Bae, Markus Tiersch, Simeon Sauer +4
We derive an explicit analytic estimate for the entanglement of a large class of bipartite quantum states which extends into bound entanglement regions. This is done by using an ef…
Scalability of GHZ and random-state entanglement in the presence of decoherence
Leandro Aolita, Daniel Cavalcanti, Antonio Acín +4
We derive analytical upper bounds for the entanglement of generalized Greenberger-Horne-Zeilinger states coupled to locally depolarizing and dephasing environments, and for local t…
Universality in open system entanglement dynamics
Markus Tiersch, Fernando de Melo, Andreas Buchleitner
We show that the entanglement evolution of an open quantum system is the same for the vast majority of initial pure states, in the limit of large Hilbert space dimensions.
Entanglement evolution in finite dimensions
Markus Tiersch, Fernando de Melo, Andreas Buchleitner
We provide a relation which describes how the entanglement of two d-level systems evolves as either system undergoes an arbitrary physical process. The dynamics of the entanglement…
A Factorization Law for Entanglement Decay
Thomas Konrad, Fernando de Melo, Markus Tiersch +3
We present a simple and general factorization law for quantum systems shared by two parties, which describes the time evolution of entanglement upon passage of either component thr…
Non-Markovian decoherence in the adiabatic quantum search algorithm
Markus Tiersch, Ralf Schützhold
We consider an adiabatic quantum algorithm (Grover's search routine) weakly coupled to a rather general environment, i.e., without using the Markov approximation. Markovian errors…
Decoherence versus Dynamical Casimir Effect
Ralf Schützhold, Markus Tiersch
By means of two simple examples: phase and amplitude damping, the impact of decoherence on the dynamical Casimir effect is investigated. Even without dissipating energy (i.e., pure…