Performance of Magnetic Quantum Cellular Automata and Limitations due to Thermal Noise (2009)
Spedalieri, Federico M., Jacob, Ajey P., Nikonov, Dmitri, Roychowdhury, Vwani P.
Operation parameters of magnetic quantum cellular automata are evaluated for the purposes of reliable logic operation. The dynamics of the nanomagnets is simulated via the Landau-Lifshitz-Gilbert...
Latency in local, two-dimensional, fault-tolerant quantum computing (2008)
Spedalieri, Federico M., Roychowdhury, Vwani P.
We analyze the latency of fault-tolerant quantum computing based on the 9-qubit Bacon-Shor code using a local, two-dimensional architecture. We embed the data qubits in a 7 by 7 array of physical...
Detecting separable states via semidefinite programs (2007)
We introduce a new technique to detect separable states using semidefinite programs. This approach provides a sufficient condition for separability of a state that is based on the existence of a...
High-fidelity linear optical quantum computing with polarization encoding (2005)
Spedalieri, Federico M., Lee, Hwang, Dowling, Jonathan P.
We show that the KLM scheme [Knill, Laflamme and Milburn, Nature {\bf 409}, 46] can be implemented using polarization encoding, thus reducing the number of path modes required by half. One of the...
Detecting multipartite entanglement (2005)
Doherty, Andrew C., Spedalieri, Federico M., Parrilo, Pablo A.
We discuss the problem of determining whether the state of several quantum mechanical subsystems is entangled. As in previous work on two subsystems we introduce a procedure for checking separability...
Detecting multipartite entanglement (2005)
Doherty, Andrew C., Parrilo, Pablo A., Spedalieri, Federico M.
We discuss the problem of determining whether the state of several quantum mechanical subsystems is entangled. As in previous work on two subsystems we introduce a procedure for checking separability...
Detecting multipartite entanglement (2005)
Doherty, Andrew C., Parrilo, Pablo A., Spedalieri, Federico M.
We discuss the problem of determining whether the state of several quantum mechanical subsystems is entangled. As in previous work on two subsystems we introduce a procedure for checking separability...
We present a new implementation of the BB84 quantum key distribution protocol that employs a $d$-dimensional Hilbert space spanned by spatial modes of the propagating beam that have a definite value...
Spedalieri, Federico M., Lee, Hwang, Florescu, Marian, Kapale, Kishore T., Yurtsever, Ulvi, Dowling, Jonathan P.
We devise a new technique to enhance transmission of quantum information through linear optical quantum information processors. The idea is based on applying the Quantum Zeno effect to the process of...
Detecting multipartite entanglement (2004)
Doherty, Andrew C., Parrilo, Pablo A., Spedalieri, Federico M.
We discuss the problem of determining whether the state of several quantum mechanical subsystems is entangled. As in previous work on two subsystems we introduce a procedure for checking separability...
Complete family of separability criteria (2004)
Doherty, Andrew C., Parrilo, Pablo A., Spedalieri, Federico M.
We introduce a family of separability criteria that are based on the existence of extensions of a bipartite quantum state rho to a larger number of parties satisfying certain symmetry properties. It...
A complete family of separability criteria (2003)
Doherty, Andrew C., Parrilo, Pablo A., Spedalieri, Federico M.
We introduce a new family of separability criteria that are based on the existence of extensions of a bipartite quantum state $\rho$ to a larger number of parties satisfying certain symmetry...
Distinguishing Separable and Entangled States (2002)
Doherty, A. C., Parrilo, Pablo A., Spedalieri, Federico M.
We show how to design families of operational criteria that distinguish entangled from separable quantum states. The simplest of these tests corresponds to the well-known Peres-Horodecki positive...
Distinguishing separable and entangled states (2001)
Doherty, Andrew C., Parrilo, Pablo A., Spedalieri, Federico M.
We show how to design families of operational criteria that distinguish entangled from separable quantum states. The simplest of these tests corresponds to the well-known Peres-Horodecki positive...
Local Deterministic Transformations of Three-Qubit Pure States (2001)
The properties of deterministic LOCC transformations of three qubit pure states are studied. We show that the set of states in the GHZ class breaks into an infinite number of disjoint classes under...