- Natural Sciences Publishing
... vanishes in the asymptotic limit, this means that in this region (N(ρ ) = 0) the entanglement between the atom and the field is completely destroyed, and the total state of the system disentangled in a finite time and goes to a vacuum state. Finally, Fig. 2(c) presents the von Neumman entropy S(ρ ) ...
... vanishes in the asymptotic limit, this means that in this region (N(ρ ) = 0) the entanglement between the atom and the field is completely destroyed, and the total state of the system disentangled in a finite time and goes to a vacuum state. Finally, Fig. 2(c) presents the von Neumman entropy S(ρ ) ...
Quantum Wires and Quantum Point Contacts
... Quantization in quantum point contacts The quantization seems to be similar to the quantum Hall effect. ...
... Quantization in quantum point contacts The quantization seems to be similar to the quantum Hall effect. ...
PDF
... a similar inverse relation exists for (3). These expressions will be used to derive an error model for our quantum communication system. ...
... a similar inverse relation exists for (3). These expressions will be used to derive an error model for our quantum communication system. ...
The deuteron
... The simplest nucleus in nature is that of the hydrogen isotope, deuterium. Known as the “deuteron,” the nucleus consists of one proton and one neutron. Due to its simplicity, the deuteron is an ideal candidate for tests of our basic understanding of nuclear physics. Recently, scientists have been st ...
... The simplest nucleus in nature is that of the hydrogen isotope, deuterium. Known as the “deuteron,” the nucleus consists of one proton and one neutron. Due to its simplicity, the deuteron is an ideal candidate for tests of our basic understanding of nuclear physics. Recently, scientists have been st ...
Quantum Probability Theory
... statement about the outcome of the experiment that can be tested by observation. - If E and F are compatible questions, they can be asked together. EF denotes the event that both E and F occur, and E ∨ F := E + F − EF is the event that either E or F occurs. So mutually exclusive events correspond to ...
... statement about the outcome of the experiment that can be tested by observation. - If E and F are compatible questions, they can be asked together. EF denotes the event that both E and F occur, and E ∨ F := E + F − EF is the event that either E or F occurs. So mutually exclusive events correspond to ...
SEGUNDO WORKSHOP INFORMACIÌN CUÊNTICA EN ESPAÑA
... very many particles. We derive entanglement criteria based only on few easy measurable quantities such as the mean values and variances of collective spin components. In particular we present what we call a generalized spin squeezing parameter, that can be used to detect a class of states wider than ...
... very many particles. We derive entanglement criteria based only on few easy measurable quantities such as the mean values and variances of collective spin components. In particular we present what we call a generalized spin squeezing parameter, that can be used to detect a class of states wider than ...
Quantum control of a model qubit based on a multi - FaMAF
... using pulses of external fields or manipulating an adequate parameter. Complete knowledge of the spectrum allows the use of “navigating methods” that make possible going from (almost) any initial state to the desired target state.11 Nevertheless, the most used approach to achieve the switching betwe ...
... using pulses of external fields or manipulating an adequate parameter. Complete knowledge of the spectrum allows the use of “navigating methods” that make possible going from (almost) any initial state to the desired target state.11 Nevertheless, the most used approach to achieve the switching betwe ...
Calculated electron dynamics in an electric field
... Recent advances allow the exploration of electron dynamics in atoms in a dynamical fashion @1–20# through the creation and detection of time-dependent electron waves. These waves are often called wave packets, although they may not be very localized in phase space. A pulsed laser field or a pulsed e ...
... Recent advances allow the exploration of electron dynamics in atoms in a dynamical fashion @1–20# through the creation and detection of time-dependent electron waves. These waves are often called wave packets, although they may not be very localized in phase space. A pulsed laser field or a pulsed e ...
ABSTRACT Title of Document:
... What entities are there (possibly, apart from the propositions scientists utter, or the mathematical structures of a given theory), and what ‘form’ do they take? How do the entities of one science relate to the entities of another—are some more ‘fundamental’ than others, more ‘real’—what? Is there a ...
... What entities are there (possibly, apart from the propositions scientists utter, or the mathematical structures of a given theory), and what ‘form’ do they take? How do the entities of one science relate to the entities of another—are some more ‘fundamental’ than others, more ‘real’—what? Is there a ...
- Purdue e-Pubs
... the optimization are defined as follows: The default gate set consists of the rotation gates (Rx , R y , Rz , Rzz ); X, Y, Z which are the Pauli operators σx , σ y , and σz , respectively; the square root of X gate (V ); the complex conjugate of V gate (V † ), S gate, T gate, and H (Hadamard) gate; ...
... the optimization are defined as follows: The default gate set consists of the rotation gates (Rx , R y , Rz , Rzz ); X, Y, Z which are the Pauli operators σx , σ y , and σz , respectively; the square root of X gate (V ); the complex conjugate of V gate (V † ), S gate, T gate, and H (Hadamard) gate; ...
Dilute Fermi and Bose Gases - Subir Sachdev
... T = 0 and we will discuss its properties; in particular, we will show that all possible fermionic nonlinearities are irrelevant near it. The reader should not be misled by the apparently trivial nature of the model in (3); using the theory of quantum phase transitions to understand free fermions mig ...
... T = 0 and we will discuss its properties; in particular, we will show that all possible fermionic nonlinearities are irrelevant near it. The reader should not be misled by the apparently trivial nature of the model in (3); using the theory of quantum phase transitions to understand free fermions mig ...
Quantum NP - A Survey Dorit Aharonov and Tomer Naveh
... expressive complexity class N P , and the rich theory of N P -completeness, and was an important building block in many later results in theoretical computer science and complexity theory, such as the PCP theorems, hardness of approximation results and the proof that IP = P Space. In the heart of t ...
... expressive complexity class N P , and the rich theory of N P -completeness, and was an important building block in many later results in theoretical computer science and complexity theory, such as the PCP theorems, hardness of approximation results and the proof that IP = P Space. In the heart of t ...
Three Quantum Algorithms to Solve 3-SAT
... one-to-one labeling, α and β are symbols of the alphabet and ∆e is a (possibly negative) integer number. The rule (ini : α, ∆e, β) is interpreted as follows: if a copy of α is in the region immediately surrounding membrane i, then this object crosses membrane i, is transformed to β, and modifies the ...
... one-to-one labeling, α and β are symbols of the alphabet and ∆e is a (possibly negative) integer number. The rule (ini : α, ∆e, β) is interpreted as follows: if a copy of α is in the region immediately surrounding membrane i, then this object crosses membrane i, is transformed to β, and modifies the ...
Quantum Channel Capacities (PDF Available)
... information through the channel not every message will reach the end of that wire without any issues or failures. In the real world we can not send every message reliably. This is a problem in the classical case as well as in the quantum case and in the quantum case the systems are the most time a l ...
... information through the channel not every message will reach the end of that wire without any issues or failures. In the real world we can not send every message reliably. This is a problem in the classical case as well as in the quantum case and in the quantum case the systems are the most time a l ...
An exponential separation between quantum and classical one
... One of the simplest interesting models of communication complexity, and still far from understood. Lower bounds on one-way communication complexity have many applications classically to lower bounds on data structures and streaming algorithms. Separating quantum and classical 1WCC is a first step to ...
... One of the simplest interesting models of communication complexity, and still far from understood. Lower bounds on one-way communication complexity have many applications classically to lower bounds on data structures and streaming algorithms. Separating quantum and classical 1WCC is a first step to ...
How Quantum Theory Helps us Explain
... ...theoretical explanations allow us to understand the world, not by showing its conformity to principles external to the theory, but by representing it in terms of the model the theory itself supplies. As we become aware of the resources of these representations, so we come to understand the pheno ...
... ...theoretical explanations allow us to understand the world, not by showing its conformity to principles external to the theory, but by representing it in terms of the model the theory itself supplies. As we become aware of the resources of these representations, so we come to understand the pheno ...
