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Draw Code 3/9 In VB.NET Using Barcode maker for Visual Studio .NET Control to generate, create Code39 image in VS .NET applications. Drawing Code39 In Java Using Barcode printer for Android Control to generate, create Code 39 image in Android applications. Suppose we have two qubits, the rst in the state 0 0 + 1 1 and the second in the state 0 0 + 1 1 What is the joint state of the two qubits The answer is, the (tensor) product of the two: 0 0 00 + 0 1 01 + 1 0 10 + 1 1 11 Given an arbitrary state of two qubits, can we specify the state of each individual qubit in this way No, in general the two qubits are entangled and cannot be decomposed into the 1 1 states of the individual qubits For example, consider the state = 2 00 + 2 11 , which is one of the famous Bell states It cannot be decomposed into states of the two individual qubits (see Exercise 101) Entanglement is one of the most mysterious aspects of quantum mechanics and is ultimately the source of the power of quantum computation Pr {1st bit = 0} = Pr {00} + Pr {01} =  00  2 +  01  2 Fine, but how much does this partial measurement disturb the state of the system The answer is elegant If the outcome of measuring the rst qubit is 0, then the new superposition is obtained by crossing out all terms of that are inconsistent with this outcome (that is, whose rst bit is 1) Of course the sum of the squares of the amplitudes is no longer 1, so we must renormalize In our example, this new state would be 00 01 new = 00 + 01  00  2 +  01  2  00  2 +  01  2 Code 128 Code Set B Printer In .NET Framework Using Barcode generator for Visual Studio .NET Control to generate, create Code128 image in Visual Studio .NET applications. Bar Code Creator In Java Using Barcode creation for Eclipse BIRT Control to generate, create barcode image in BIRT applications. Finally, let us consider the general case of n hydrogen atoms Think of n as a fairly small number of atoms, say n = 500 Classically the states of the 500 electrons could be used to store 500 bits of information in the obvious way But the quantum state of the 500 qubits is a linear superposition of all 2500 possible classical states: x x Read Code 128B In Java Using Barcode scanner for Java Control to read, scan read, scan image in Java applications. Create UPCA Supplement 2 In Visual Studio .NET Using Barcode printer for .NET Control to generate, create GS1  12 image in Visual Studio .NET applications. 
