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Error in General Formulation of Quantum Information course - Density matrices unit #1618

Closed harrylippy closed 2 months ago

harrylippy commented 2 months ago

URL to relevant documentation: https://learning.quantum.ibm.com/course/general-formulation-of-quantum-information/density-matrices

In "The completely mixed state" subsection, there is an error in the probability specifications for the state |1>. Screenshot attached, with error circled and an arrow indicating where the error is corrected just below the error in the text.

error-density-matrix-1

ERROR:

If the state is |1>, we obtain the outcomes 0 and 1 with probabilities

|<0|U|1>|^2 and |<1|U|0>|^2

CORRECTION:

If the state is |1>, we obtain the outcomes 0 and 1 with probabilities

|<0|U|1>|^2 and |<1|U|1>|^2
harrylippy commented 2 months ago

@abbycross Here is another issue from Quantum Learning, if you could pass it on. Thanks!

abbycross commented 2 months ago

Sending it along now!

jhwatrous commented 2 months ago

Fixed. Thank you!