Getting the atoms into an entangled state
more quickly would be a potential advantage in any practical application, not least because entanglement can be fleeting.
Interference between the two entangled states
measured that length difference with the expected increase in precision.
However, no simple logical relation between entanglement and Bell correlation holds for the mixed entangled states
Gao et al., "Controlled quantum teleportation of a one-particle unknown state via a three-particle entangled state
," Communications in Theoretical Physics, vol.
Unlike the classical communication, the qubits not only can be in a variety of orthogonal superposition states but also can be in the entangled state
. The principle of quantum teleportation is to establish a quantum channel by using the maximum entangled state
of two particles.
To examine how CTCs may resolve the old collapse of the quantum wave function issue, I shall look first into part I: four specific scenarios using two qubit input states and finally in part II: a situation first envisioned by Bennett et al  involving two cases having one half of a Bell-type entangled state
entering a Swap gate together a CTC qubit: In the first of these entangled cases, IIa, labeled a single universe picture, we have three input qubits.
This leads to an entangled state
in the two output channels of that beam splitter.
Importantly, the requirement of flat space at the horizon entails a high degree of entanglement between the interior and the modes just outside the horizon (such an entangled state
for the near-horizon region is referred to as the Unruh vacuum state ).
It is well known that nonlocality and entanglement are equivalent for multipartite pure states (in the sense that every entangled state
is nonlocal and viceversa) (Gisin 1991, Gisin & Peres 1992, Popescu & Rohrlich 1992).
Two or more particles can be wrangled into what's known as an entangled state
, intricately linking the particles' properties regardless of the distance between them.
is an entangled state
, where |H)A denotes the photon A is horizontally polarized.
The entangled state
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