Browsing by Author "Burgarth, Daniel"

Sort by: Order: Results:

  • Burgarth, Daniel; Giovannetti, Vittorio; Hogben, Leslie; Severini, Simone; Young, Michael (2015-09)
    We design logic circuits based on the notion of zero forcing on graphs; each gate of the circuits is a gadget in which zero forcing is performed. We show that such circuits can evaluate every monotone Boolean function. By ...
  • Burgarth, Daniel; Facchi, Paolo; Giovannetti, Vittorio; Nakazato, Hiromichi; Pascazio, Saverio; Yuasa, Kazuya (2013-10-09)
    A connection is established between the non-Abelian phases obtained via adiabatic driving and those acquired via quantum Zeno dynamics induced by repeated projective measurements. In comparison to the adiabatic case, the ...
  • Burgarth, Daniel; Facchi, Paolo (2017-07-20)
    It is commonly claimed that only Hamiltonians with a spectrum unbounded both above and below can give purely exponential decay. Because such Hamiltonians have no ground state, they are considered unphysical. Here we show ...
  • Burgarth, Daniel; Giovannetti, Vittorio (2011-09-27)
    We discuss an explicit protocol which allows one to externally cool and control a composite system by operating on a small subset of it. The scheme permits to transfer arbitrary and unknown quantum states from a memory on ...
  • Burgarth, Daniel; Giovannetti, Vittorio (2011-09-27)
    We discuss an explicit protocol which allows one to externally cool and control a composite system by operating on a small subset of it. The scheme permits to transfer arbitrary and unknown quantum states from a memory on ...
  • Bliss, Roger S.; Burgarth, Daniel (2014-03-10)
    A major challenge to the control of infinite-dimensional quantum systems is the irreversibility which is often present in the system dynamics. Here we consider systems with discrete-spectrum Hamiltonians operating over a ...
  • Zhang, Jingfu; Burgarth, Daniel; Ditty, Michael; Ryan, Colm A.; Chandrashekar, C. M.; Laforest, Martin; Moussa, Osama; Baugh, Jonathan; Laflamme, Raymond (2009-06-16)
    We implement an iterative quantum state transfer exploiting the natural dipolar couplings in a spin chain of a liquid-crystal NMR system. During each iteration, a finite part of the amplitude of the state is transferred ...
  • Burgarth, Daniel; Giovannetti, Vittorio; Kato, Airi N.; Yuasa, Kazuya (2015-11-27)
    Theroblem of estimating aarameter of a quantum system through a series of measurementserformed sequentially on a quantumrobe is analyzed in the general setting where the underlying statistics is explicitly non-i.i.d. ...
  • Kiukas, Jukka; Burgarth, Daniel (2016-03-04)
    We demonstrate how quantum optimal control can be used to enhance quantum resources for bipartite one-way protocols, specifically Einstein-Podolsky-Rosen steering with qubit measurements. Steering is relevant for one-sided ...
  • Dive, Benjamin; Mintert, Florian; Burgarth, Daniel (2015-09-09)
    The simulation of quantum systems has been a key aim of quantum technologies for decades, and generalization to open systems is necessary to include physically realistic systems. We introduce an approach for quantum ...
  • Shackerley-Bennett, Uther; Pitchford, Alexander; Genoni, Marco G.; Serafini, Alessio; Burgarth, Daniel (2017-03-14)
    Open-loop controllability in quantum mechanics refers to finding conditions on time-varying Hamiltonians such that a full group of unitary transformations can be enacted with them. For compact groups controllability is ...
  • Kiukas, Jukka; Yuasa, Kazuya; Burgarth, Daniel (2017-05-31)
    We study the interplay of control and parameter estimation on a quantum spin chain. A single qubit probe is attached to one end of the chain, while we wish to estimate a parameter on the other end. We find that control on ...
  • Burgarth, Daniel; Maryuama, Koji; Murphy, Michael; Montangero, Simone; Calarco, Tommaso; Nori, Franco; Plenio, Martin B. (2010-04-22)
    We apply quantum control techniques to a long spin chain by acting only on two qubits at one of its ends, thereby implementing universal quantum computation by a combination of quantum gates on these qubits and indirect ...
  • Kontogeorgakopoulos, Alexandros; Burgarth, Daniel (National & Kapodistrian University of Athens, 2014-01-01)
    In the present paper we employ sonification and simple electroacoustic composition techniques to represent simulated controlled quantum dynamics. We suggest an intuitive sonification process in order to represent acoustically ...
  • Wang, Xiaoting; Burgarth, Daniel; Schirmer, S. (2016-11-14)
    We develop a technique to prove simultaneous subspace controllability on multiple invariant subspaces, which specifically enables us study the controllability properties of spin systems that are not amenable to standard ...
  • Zimborás, Zoltán; Zeier, Robert; Schulte-Herbrüggen, Thomas; Burgarth, Daniel (2015-10-08)
    What can one do with a given tunable quantum device? We provide complete symmetry criteria deciding whether some effective target interaction(s) can be simulated by a set of given interactions. Symmetries lead to a better ...
  • Arenz, Christian; Burgarth, Daniel; Facchi, Paolo; Giovannetti, Vittorio; Nakazato, Hiromichi; Pascazio, Saverio; Yuasa, Kazuya (2016-06-06)
    On the basis of the quantum Zeno effect, it has been recently shown [D. K. Burgarth, Nat. Commun. 5, 5173 (2014)2041-172310.1038/ncomms6173] that a strong-amplitude-damping process applied locally on a part of a quantum ...
  • Burgarth, Daniel; D'Alessandro, Domenico; Hogben, Leslie; Severini, Simone; Young, Michael (2013-09)
    We study the dynamics of systems on networks from a linear algebraic perspective. The control theoretic concept of controllability describes the set of states that can be reached for these systems. Our main result says ...