exploiting the superposition principle foundations and applications
... • Laboratory for testing the necessary tools for high resolution atom interferometry in microgravity / extended free fall • nK/pK laboratory ...
... • Laboratory for testing the necessary tools for high resolution atom interferometry in microgravity / extended free fall • nK/pK laboratory ...
Classification of Topologically ordered Phases
... Selection rule forces the nonlocal order to vanish if edge spins are fractionalized ...
... Selection rule forces the nonlocal order to vanish if edge spins are fractionalized ...
Time Symmetry and the Many-Worlds Interpretation - Philsci
... passes the first beam splitter of a properly tuned Mach-Zehnder interferometer (MZI, see Figure 4), its description as a superposition of being in two separate locations is necessary to explain why it will end up with certainty in one output of the interferometer and not in the other. If, after the ...
... passes the first beam splitter of a properly tuned Mach-Zehnder interferometer (MZI, see Figure 4), its description as a superposition of being in two separate locations is necessary to explain why it will end up with certainty in one output of the interferometer and not in the other. If, after the ...
Quantum networks with trapped ions
... still helpful to boost up the coupling efficiency兲 and is more robust to noise. However, probabilistic protocols rely on special error-correction protocols with a certain overhead in qubits and time to achieve efficient scaling to large-scale networks. When an optically active material qubit is exci ...
... still helpful to boost up the coupling efficiency兲 and is more robust to noise. However, probabilistic protocols rely on special error-correction protocols with a certain overhead in qubits and time to achieve efficient scaling to large-scale networks. When an optically active material qubit is exci ...
Experimental Implementation of Encoded Logical Qubit Operations
... Experimental results.—We first checked the encoding, encoded gate and decoding operations with a simplified experimental scheme. Compared to the full scheme shown in Fig. 1, we omitted the the error and error correction operations. Figure 4 shows the experimental results for the process matrices a ...
... Experimental results.—We first checked the encoding, encoded gate and decoding operations with a simplified experimental scheme. Compared to the full scheme shown in Fig. 1, we omitted the the error and error correction operations. Figure 4 shows the experimental results for the process matrices a ...
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 ...
Document
... trapped-ion qubits. We demonstrate the capability of the code to detect one bit flip, phase flip or a combined error of both, regardless on which of the qubits they occur. Furthermore, we apply combinations of the entire set of logical single-qubit Clifford gates on the encoded qubit to explore its ...
... trapped-ion qubits. We demonstrate the capability of the code to detect one bit flip, phase flip or a combined error of both, regardless on which of the qubits they occur. Furthermore, we apply combinations of the entire set of logical single-qubit Clifford gates on the encoded qubit to explore its ...
ppt - Pavel Stránský
... Unfolding: A transformation of the spectrum that removes the smooth part of the level density Note: Improved unfolding procedure using the Empirical Mode Decomposition method in: I. Morales et al., Phys. Rev. E 84, 016203 (2011) ...
... Unfolding: A transformation of the spectrum that removes the smooth part of the level density Note: Improved unfolding procedure using the Empirical Mode Decomposition method in: I. Morales et al., Phys. Rev. E 84, 016203 (2011) ...
lec12c-Simon
... 2. Apply the theorem to get an element not in Y , update Y and the counter 3. Stop if the zero element is returned ...
... 2. Apply the theorem to get an element not in Y , update Y and the counter 3. Stop if the zero element is returned ...
QUANTUM ERROR CORRECTING CODES FROM THE
... quantum error correction (QEC) [1–4] depends upon the existence and identification of states and operators on which the error operators are jointly well-behaved in a precise sense. The stabilizer formalism for QEC [5, 6] gives a constructive framework to find correctable codes for error models of “P ...
... quantum error correction (QEC) [1–4] depends upon the existence and identification of states and operators on which the error operators are jointly well-behaved in a precise sense. The stabilizer formalism for QEC [5, 6] gives a constructive framework to find correctable codes for error models of “P ...
The regularities of the Rydberg energy levels of many
... highly praised. Unfortunately, however, the divergence in the calculation not only makes the computation onerous, but makes it difficult to compute high Rydberg states using these methods. The presentation and development of quantum defect theory (QDT) provided a feasible way to calculate the high R ...
... highly praised. Unfortunately, however, the divergence in the calculation not only makes the computation onerous, but makes it difficult to compute high Rydberg states using these methods. The presentation and development of quantum defect theory (QDT) provided a feasible way to calculate the high R ...
Quantum Chaos and Quantum Computers
... spins (see recent review [2] and references there in). The computer operation is based on a controlled series of two-qubit coupling switches, on and o¡ which together with one-qubit rotations allow to realize any unitary operation in the Hilbert space of size NH 2n [3,4]. In this respect the inter ...
... spins (see recent review [2] and references there in). The computer operation is based on a controlled series of two-qubit coupling switches, on and o¡ which together with one-qubit rotations allow to realize any unitary operation in the Hilbert space of size NH 2n [3,4]. In this respect the inter ...
The magnehydrogen in hadronic chemistry
... specify the number of hydrogen atoms per cluster. Most of the environmental pollution is caused by fossil fuel is due to chunks (dimers) of uncombusted fuel that may be carcinogenic primarily because consisting of incomplete combustion of fuel. Therefore, Santilli has proposed and synthesized a new ...
... specify the number of hydrogen atoms per cluster. Most of the environmental pollution is caused by fossil fuel is due to chunks (dimers) of uncombusted fuel that may be carcinogenic primarily because consisting of incomplete combustion of fuel. Therefore, Santilli has proposed and synthesized a new ...
Quantum key distribution
Quantum key distribution (QKD) uses quantum mechanics to guarantee secure communication. It enables two parties to produce a shared random secret key known only to them, which can then be used to encrypt and decrypt messages. It is often incorrectly called quantum cryptography, as it is the most well known example of the group of quantum cryptographic tasks.An important and unique property of quantum key distribution is the ability of the two communicating users to detect the presence of any third party trying to gain knowledge of the key. This results from a fundamental aspect of quantum mechanics: the process of measuring a quantum system in general disturbs the system. A third party trying to eavesdrop on the key must in some way measure it, thus introducing detectable anomalies. By using quantum superpositions or quantum entanglement and transmitting information in quantum states, a communication system can be implemented which detects eavesdropping. If the level of eavesdropping is below a certain threshold, a key can be produced that is guaranteed to be secure (i.e. the eavesdropper has no information about it), otherwise no secure key is possible and communication is aborted.The security of encryption that uses quantum key distribution relies on the foundations of quantum mechanics, in contrast to traditional public key cryptography which relies on the computational difficulty of certain mathematical functions, and cannot provide any indication of eavesdropping at any point in the communication process, or any mathematical proof as to the actual complexity of reversing the one-way functions used. QKD has provable security based on information theory, and forward secrecy.Quantum key distribution is only used to produce and distribute a key, not to transmit any message data. This key can then be used with any chosen encryption algorithm to encrypt (and decrypt) a message, which can then be transmitted over a standard communication channel. The algorithm most commonly associated with QKD is the one-time pad, as it is provably secure when used with a secret, random key. In real world situations, it is often also used with encryption using symmetric key algorithms like the Advanced Encryption Standard algorithm. In the case of QKD this comparison is based on the assumption of perfect single-photon sources and detectors, that cannot be easily implemented.