#### Filter Results:

- Full text PDF available (24)

#### Publication Year

1998

2016

- This year (0)
- Last 5 years (5)
- Last 10 years (9)

#### Publication Type

#### Journals and Conferences

#### Key Phrases

Learn More

- José L. Cereceda
- 2000

Relativistic causality, namely, the impossibility of signaling at superluminal speeds, restricts the kinds of correlations which can occur between different parts of a composite physical system. Here we establish the basic restrictions which relativistic causality imposes on the joint probabilities involved in an experiment of the… (More)

- José L. Cereceda
- 2004

In this paper we extend Hardy’s nonlocality proof for two spin-1/2 particles [L. Hardy, Phys. Rev. Lett. 71, 1665 (1993)] to the case of n spin-1/2 particles configured in the generalized GHZ state. We show that, for all n ≥ 3, any entangled GHZ state (including a maximally entangled one) does exhibit Hardy’s nonlocality. It turns out that the maximal… (More)

- José L. Cereceda
- 2001

We consider a situation in which two parties, Alice and Bob, share a 3-qubit system coupled in an initial maximally entangled, GHZ state. By manipulating locally two of the qubits, Alice can prepare any one of the eight 3-qubit GHZ states. Thus the sending of Alice’s two qubits to Bob, entails 3 bits of classical information which can be recovered by Bob by… (More)

- José L. Cereceda
- 2008

By using an alternative, equivalent form of the CHSH inequality and making extensive use of the experimentally testable property of physical locality we determine the 64 different Bell-type inequalities (each one involving four joint probabilities) into which Hardy’s nonlocality theorem can be cast. This allows one to identify all the two-qubit correlations… (More)

- José L. Cereceda
- 2004

Deutsch’s algorithm for two qubits (one control qubit plus one auxiliary qubit) is extended to two d-dimensional quantum systems or qudits for the case in which d is equal to 2n, n = 1, 2, . . . . This allows one to classify a certain oracle function by just one query, instead of the 2 + 1 queries required by classical means. The given algorithm for two… (More)

In this paper we consider the hypersum polynomials, P (m) k (n) = ∑k+m+1 r=0 c r k,mn , and give an explicit formula for the coefficients crk,m. We show that the c r k,m’s satisfy a generalized Akiyama-Tanigawa recurrence relation, thus extending some previous results due to Inaba. We also give a number of identities involving the Stirling numbers of the… (More)

- José L. Cereceda
- 2003

In this paper, a new measure of entanglement for general pure bipartite states of two qutrits is formulated.

- José L. Cereceda
- 1999

In this paper the failure of Hardy’s nonlocality proof for the class of maximally entangled states is considered. A detailed analysis shows that the incompatibility of the Hardy equations for this class of states physically originates from the fact that the existence of quantum perfect correlations for the three pairs of two-valued observables (D11,D21),… (More)

- José L. Cereceda
- 2000

Elaborating on a previous work by Han et al. [Phys. Lett. A 221 (1996) 283], we provide a general, basis-independent proof of the necessity of negative probability measures in certain local hidden-variable (LHV) models giving a violation of the Bell-CHSH inequality. Moreover, we obtain general solutions for LHV-induced probability measures that reproduce… (More)

- José L. Cereceda
- 2001

Elaborating on a previous work by Simon et al. (Phys. Rev. Lett. 85, 1783 (2000)) we propose a realizable quantum optical single-photon experiment using standard present day technology, capable of discriminating maximally between the predictions of quantum mechanics (QM) and noncontextual hidden variable theories (NCHV). Quantum mechanics predicts a gross… (More)