Quantum Physics
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Quantum Physics
Suppose Alice starts with two qubits in the Bell state 1/√2 (00> + 11>) and teleports these qubits to Bob by applying the quantum teleportation protocol to each qubit separately. (a) What is the state of the two qubits
asked by qwerty on March 3, 2013 
Quantum physics
Suppose Alice has three qubits in the state α000>+β111>. If she sends these qubits to Bob by applying the teleportation protocol to each of them separately, what is the state that Bob receives?
asked by gluck on March 17, 2013 
physics
Alice has a very important piece of information, which is encoded as an integer k. She is storing this number in a quantum state ψ⟩=∑xαxx⟩ of n qubits in such a way that if you apply QFT2n to ψ⟩ and then measure in
asked by s on March 22, 2013 
science
Suppose we initially had n qubits in the state ψ⟩=∑x∈{0,1}nαxx⟩, on which we were going to perform Fourier sampling (i.e. perform Hadamard transform H⊗n and sample). Unfortunately, a clumsy lab assistant mistakenly
asked by elviria on April 15, 2013 
physics
Suppose we have two qubits in the state (a0⟩+b1⟩)0⟩, to which we apply the following circuit. (a) Is the resulting state entangled? Yes No (b) Specify the state of each qubit after we applied the circuit.
asked by s on March 1, 2013 
Quantum Physics
Suppose we have two qubits in the state α00⟩+β11⟩. (a) If we measure the fi rst qubit in the sign basis, what is the probability of seeing a +? (b) What is the resulting state of the second qubit in that case?
asked by qwerty on February 17, 2013 
Quantum Physics
Suppose you are given an endless supply of qubits in the state (1/√2)00>+(e^iϕ/√2)10>. To estimate the phase angle ϕ, you run Fourier sampling (i.e. Hadamard on each qubit followed by a standard basis measurement) on this
asked by None on October 12, 2013 
Quantum Physics
Suppose you are given an endless supply of qubits in the state 12√00⟩+eiϕ2√10⟩. To estimate the phase angle ϕ, you run Fourier sampling (i.e. Hadamard on each qubit followed by a standard basis measurement) on this
asked by ss01 on October 12, 2013 
Physics
Suppose we have two qubits in the state α00⟩+β11⟩. (a) If we measure the first qubit in the sign basis, what is the probability of seeing a +? (b) What is the resulting state of the second qubit in that case? Use a and b
asked by unknown on February 17, 2013 
Physics
Suppose we have two qubits in the state α00⟩+β11⟩. (a) If we measure the first qubit in the sign basis, what is the probability of seeing a +? (b) What is the resulting state of the second qubit in that case? Use a and b
asked by unknown on February 16, 2013